From 75105c4716d44580bb0d9dd582fbdded0b039a94 Mon Sep 17 00:00:00 2001
From: Jonas Johan Solsvik <jonasjso@protonmail.com>
Date: Mon, 23 Nov 2020 16:37:24 +0100
Subject: [PATCH 01/12] Add day00-example

---
 .editorconfig                       |  1 -
 .github/workflows/test.yaml         |  6 ++++--
 Dockerfile                          | 23 ++++++++++++++++++++---
 Makefile                            |  6 ++++--
 day00-example/README.md             | 11 +++++++++++
 day00-example/answers/main.deno.ts  | 16 ++++++++++++++++
 day00-example/answers/main.go       | 27 +++++++++++++++++++++++++++
 day00-example/answers/main.node.mjs | 19 +++++++++++++++++++
 day00-example/answers/main.py       | 18 ++++++++++++++++++
 day00-example/input                 |  8 ++++++++
 day00-example/output                |  2 ++
 day00-example/test.sh               | 29 +++++++++++++++++++++++++++++
 scripts/print-versions.sh           |  6 ------
 scripts/versions.sh                 | 20 ++++++++++++++++++++
 14 files changed, 178 insertions(+), 14 deletions(-)
 create mode 100644 day00-example/README.md
 create mode 100644 day00-example/answers/main.deno.ts
 create mode 100644 day00-example/answers/main.go
 create mode 100644 day00-example/answers/main.node.mjs
 create mode 100644 day00-example/answers/main.py
 create mode 100644 day00-example/input
 create mode 100644 day00-example/output
 create mode 100755 day00-example/test.sh
 delete mode 100755 scripts/print-versions.sh
 create mode 100755 scripts/versions.sh

diff --git a/.editorconfig b/.editorconfig
index fcd8ade1..935c9276 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -11,4 +11,3 @@ insert_final_newline = true
 [Makefile]
 indent_style = tab
 indent_size = 4
-
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 39c7be86..6ae4cdd8 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -18,11 +18,13 @@ on:
       - README.md
 
 jobs:
-  test:
+  day00-example:
     runs-on: ubuntu-latest
     container:
       image: jonasjso/adventofcode2020
     steps:
       - uses: actions/checkout@v2
       - name: Print versions
-        run: ./scripts/print-versions.sh
+        run: ./scripts/versions.sh
+      - name: Test day 00
+        run: ./day00-example/test.sh
diff --git a/Dockerfile b/Dockerfile
index f2055080..829a1fb1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,26 @@
 FROM ubuntu:latest
 LABEL github=https://github.com/Arxcis/adventofcode2020
 
-# Apt install all the things
+# Configure TZ, so we don't get interactive prompt
+ENV TZ=Europe/Kiev
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
+
+# Install all the things
+RUN apt update && apt install -yqq\
+  curl\
+  unzip;
+
+# Tell ubuntu that we want to install node from nodesource
+RUN curl -sL https://deb.nodesource.com/setup_15.x | bash -
+
+# Install all the things
 RUN apt update && apt install -yqq\
+  # python3 v3.8.6
 	python3\
-	python-is-python3\
-	;
+  # golang 1.14
+  golang\
+  # nodejs v15.x
+  nodejs
 
+  # deno v1.5.3
+RUN curl -fsSL https://deno.land/x/install/install.sh | sh && mv /root/.deno/bin/deno /bin/deno
diff --git a/Makefile b/Makefile
index 318a7e52..f1c5e711 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 test:
-	echo "hello test"
+	./day00-example/test.sh
 
 dockerbuild: Dockerfile
 	docker build . --tag jonasjso/adventofcode2020
@@ -7,6 +7,8 @@ dockerbuild: Dockerfile
 dockerpush:
 	docker push jonasjso/adventofcode2020:latest
 
+versions:
+	./scripts/versions.sh
 
-.PHONY: dockerbuild dockerpush test
+.PHONY: dockerbuild dockerpush test versions
 
diff --git a/day00-example/README.md b/day00-example/README.md
new file mode 100644
index 00000000..11d197ff
--- /dev/null
+++ b/day00-example/README.md
@@ -0,0 +1,11 @@
+# Day 0: Example day
+
+This example folder defines the framework of how the rest of the folders should be laid out.
+## --- Part 1 ---
+
+Sum all numbers
+
+## --- Part 2 ---
+
+Sum all odd numbers
+
diff --git a/day00-example/answers/main.deno.ts b/day00-example/answers/main.deno.ts
new file mode 100644
index 00000000..244eb37e
--- /dev/null
+++ b/day00-example/answers/main.deno.ts
@@ -0,0 +1,16 @@
+import { readLines } from "https://deno.land/std@0.78.0/io/bufio.ts";
+
+let sumAll = 0;
+let sumOdd = 0;
+for await (const line of readLines(Deno.stdin)) {
+  if (line === "") continue;
+
+  const num = parseInt(line);
+  sumAll += num;
+  sumOdd += num % 2 === 0 ? 0 : num;
+}
+
+// = Answer
+console.log(`${sumAll}`);
+console.log(`${sumOdd}`);
+// ================
diff --git a/day00-example/answers/main.go b/day00-example/answers/main.go
new file mode 100644
index 00000000..b5a23c06
--- /dev/null
+++ b/day00-example/answers/main.go
@@ -0,0 +1,27 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strconv"
+)
+
+func main() {
+	scanner := bufio.NewScanner(os.Stdin)
+
+	var sumAll int64 = 0
+	var sumOdd int64 = 0
+	for scanner.Scan() {
+		line := scanner.Text()
+		num, _ := strconv.ParseInt(line, 10, 64)
+		sumAll += num
+
+		if num%2 != 0 {
+			sumOdd += num
+		}
+	}
+
+	fmt.Println(sumAll)
+	fmt.Println(sumOdd)
+}
diff --git a/day00-example/answers/main.node.mjs b/day00-example/answers/main.node.mjs
new file mode 100644
index 00000000..c28e1295
--- /dev/null
+++ b/day00-example/answers/main.node.mjs
@@ -0,0 +1,19 @@
+import readline from "readline";
+
+const lines = readline.createInterface({
+  input: process.stdin,
+});
+
+let sumAll = 0;
+let sumOdd = 0;
+for await (const line of lines) {
+  const num = parseInt(line);
+  sumAll += num;
+  sumOdd += num % 2 === 0 ? 0 : num
+
+}
+
+// = Answer
+console.log(`${sumAll}`)
+console.log(`${sumOdd}`)
+// ================
diff --git a/day00-example/answers/main.py b/day00-example/answers/main.py
new file mode 100644
index 00000000..aea4ec6e
--- /dev/null
+++ b/day00-example/answers/main.py
@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+#-*- coding:utf-8 -*-
+
+import fileinput
+
+sum_all = 0
+sum_odd = 0
+
+for line in fileinput.input():
+  num = int(line)
+  sum_all += num
+  if num % 2 != 0:
+    sum_odd += num
+
+# = Answer
+print(str(sum_all))
+print(str(sum_odd))
+# ================
diff --git a/day00-example/input b/day00-example/input
new file mode 100644
index 00000000..cbfe526f
--- /dev/null
+++ b/day00-example/input
@@ -0,0 +1,8 @@
+1
+2
+3
+4
+8
+12
+3000
+28731
diff --git a/day00-example/output b/day00-example/output
new file mode 100644
index 00000000..14a33409
--- /dev/null
+++ b/day00-example/output
@@ -0,0 +1,2 @@
+31761
+28735
diff --git a/day00-example/test.sh b/day00-example/test.sh
new file mode 100755
index 00000000..bc753577
--- /dev/null
+++ b/day00-example/test.sh
@@ -0,0 +1,29 @@
+#!/bin/bash
+
+set -e
+
+SCRIPT_PATH=`realpath $0`
+
+TASK_DIR=`dirname $SCRIPT_PATH`
+ANSWERS_DIR="$TASK_DIR/answers"
+INPUT=$(cat $TASK_DIR/input)
+OUTPUT="$TASK_DIR/output"
+SUCCESS="✅"
+
+TASK_NAME="${TASK_DIR%"${TASK_DIR##*[!/]}"}"
+TASK_NAME="${TASK_NAME##*/}"
+
+#
+# Run tests for day00
+#
+echo "$INPUT" | deno run "$ANSWERS_DIR/main.deno.ts" | diff - $OUTPUT
+echo "$TASK_NAME: deno $SUCCESS"
+
+echo "$INPUT" | go run "$ANSWERS_DIR/main.go" | diff - $OUTPUT
+echo "$TASK_NAME: go $SUCCESS"
+
+echo "$INPUT" | node "$ANSWERS_DIR/main.node.mjs" | diff - $OUTPUT
+echo "$TASK_NAME: node $SUCCESS"
+
+echo "$INPUT" | python3 "$ANSWERS_DIR/main.py" | diff - $OUTPUT
+echo "$TASK_NAME: python $SUCCESS"
diff --git a/scripts/print-versions.sh b/scripts/print-versions.sh
deleted file mode 100755
index 13696dc7..00000000
--- a/scripts/print-versions.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-#!/bin/bash
-echo ""
-uname -a
-
-echo ""
-python --version
diff --git a/scripts/versions.sh b/scripts/versions.sh
new file mode 100755
index 00000000..006a8306
--- /dev/null
+++ b/scripts/versions.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+echo "$ uname -a"
+uname -a
+echo ""
+
+echo "$ deno --version"
+deno --version
+echo ""
+
+echo "$ go version"
+go version
+echo ""
+
+echo "$ node --version"
+node --version
+echo ""
+
+echo "$ python3 --version"
+python3 --version
+echo ""

From d1551ace20c5ce8d55d0d4c1b62e3812a5f6d574 Mon Sep 17 00:00:00 2001
From: Jonas Johan Solsvik <jonasjso@protonmail.com>
Date: Mon, 23 Nov 2020 18:48:10 +0100
Subject: [PATCH 02/12] Rename answers/ -> cmd/ and add test-*.sh scripts

---
 .github/workflows/test.yaml                   |  6 ++--
 Makefile                                      |  5 ++--
 README.md                                     |  2 +-
 day-00-example/README.md                      | 12 ++++++++
 .../cmd}/main.deno.ts                         |  0
 .../answers => day-00-example/cmd}/main.go    |  0
 .../cmd}/main.node.mjs                        |  0
 .../answers => day-00-example/cmd}/main.py    |  0
 {day00-example => day-00-example}/input       |  0
 {day00-example => day-00-example}/output      |  0
 day-00-example/test.sh                        | 11 +++++++
 day00-example/README.md                       | 11 -------
 day00-example/test.sh                         | 29 -------------------
 scripts/{versions.sh => print-versions.sh}    |  0
 scripts/test-deno.sh                          | 11 +++++++
 scripts/test-go.sh                            | 11 +++++++
 scripts/test-node.sh                          | 11 +++++++
 scripts/test-py.sh                            | 11 +++++++
 18 files changed, 73 insertions(+), 47 deletions(-)
 create mode 100644 day-00-example/README.md
 rename {day00-example/answers => day-00-example/cmd}/main.deno.ts (100%)
 rename {day00-example/answers => day-00-example/cmd}/main.go (100%)
 rename {day00-example/answers => day-00-example/cmd}/main.node.mjs (100%)
 rename {day00-example/answers => day-00-example/cmd}/main.py (100%)
 rename {day00-example => day-00-example}/input (100%)
 rename {day00-example => day-00-example}/output (100%)
 create mode 100755 day-00-example/test.sh
 delete mode 100644 day00-example/README.md
 delete mode 100755 day00-example/test.sh
 rename scripts/{versions.sh => print-versions.sh} (100%)
 create mode 100755 scripts/test-deno.sh
 create mode 100755 scripts/test-go.sh
 create mode 100755 scripts/test-node.sh
 create mode 100755 scripts/test-py.sh

diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 6ae4cdd8..32031bca 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -18,13 +18,13 @@ on:
       - README.md
 
 jobs:
-  day00-example:
+  day-00-example:
     runs-on: ubuntu-latest
     container:
       image: jonasjso/adventofcode2020
     steps:
       - uses: actions/checkout@v2
       - name: Print versions
-        run: ./scripts/versions.sh
+        run: ./scripts/print-versions.sh
       - name: Test day 00
-        run: ./day00-example/test.sh
+        run: ./day-00-example/test.sh
diff --git a/Makefile b/Makefile
index f1c5e711..995ac92e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 test:
-	./day00-example/test.sh
+	./day-00-example/test.sh
 
 dockerbuild: Dockerfile
 	docker build . --tag jonasjso/adventofcode2020
@@ -8,7 +8,6 @@ dockerpush:
 	docker push jonasjso/adventofcode2020:latest
 
 versions:
-	./scripts/versions.sh
+	./scripts/print-versions.sh
 
 .PHONY: dockerbuild dockerpush test versions
-
diff --git a/README.md b/README.md
index 650af238..07b96a61 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # adventofcode2020
-Solving the 2020 edition of https://adventofcode.com/ in many languages, and test the solutions using Github CI
+Solving the 2020 edition of https://adventofcode.com/ in many languages, and test the solutions using Github CI.
 
 ## References
 - Last attempt https://github.com/Arxcis/adventofcode2018/
diff --git a/day-00-example/README.md b/day-00-example/README.md
new file mode 100644
index 00000000..ddc00f08
--- /dev/null
+++ b/day-00-example/README.md
@@ -0,0 +1,12 @@
+# day-00-example
+
+This example-folder sets the precedence, of how the rest of the folders should be laid out.
+
+## --- Part 1 ---
+
+Sum all numbers
+
+## --- Part 2 ---
+
+Sum all odd numbers
+
diff --git a/day00-example/answers/main.deno.ts b/day-00-example/cmd/main.deno.ts
similarity index 100%
rename from day00-example/answers/main.deno.ts
rename to day-00-example/cmd/main.deno.ts
diff --git a/day00-example/answers/main.go b/day-00-example/cmd/main.go
similarity index 100%
rename from day00-example/answers/main.go
rename to day-00-example/cmd/main.go
diff --git a/day00-example/answers/main.node.mjs b/day-00-example/cmd/main.node.mjs
similarity index 100%
rename from day00-example/answers/main.node.mjs
rename to day-00-example/cmd/main.node.mjs
diff --git a/day00-example/answers/main.py b/day-00-example/cmd/main.py
similarity index 100%
rename from day00-example/answers/main.py
rename to day-00-example/cmd/main.py
diff --git a/day00-example/input b/day-00-example/input
similarity index 100%
rename from day00-example/input
rename to day-00-example/input
diff --git a/day00-example/output b/day-00-example/output
similarity index 100%
rename from day00-example/output
rename to day-00-example/output
diff --git a/day-00-example/test.sh b/day-00-example/test.sh
new file mode 100755
index 00000000..97954a34
--- /dev/null
+++ b/day-00-example/test.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+set -e
+DIR=$(dirname $(realpath $0))
+
+#
+# Run tests for day-00-example
+#
+$DIR/../scripts/test-deno.sh "main.deno.ts" $DIR
+$DIR/../scripts/test-go.sh "main.go" $DIR
+$DIR/../scripts/test-node.sh "main.node.mjs" $DIR
+$DIR/../scripts/test-py.sh "main.py" $DIR
diff --git a/day00-example/README.md b/day00-example/README.md
deleted file mode 100644
index 11d197ff..00000000
--- a/day00-example/README.md
+++ /dev/null
@@ -1,11 +0,0 @@
-# Day 0: Example day
-
-This example folder defines the framework of how the rest of the folders should be laid out.
-## --- Part 1 ---
-
-Sum all numbers
-
-## --- Part 2 ---
-
-Sum all odd numbers
-
diff --git a/day00-example/test.sh b/day00-example/test.sh
deleted file mode 100755
index bc753577..00000000
--- a/day00-example/test.sh
+++ /dev/null
@@ -1,29 +0,0 @@
-#!/bin/bash
-
-set -e
-
-SCRIPT_PATH=`realpath $0`
-
-TASK_DIR=`dirname $SCRIPT_PATH`
-ANSWERS_DIR="$TASK_DIR/answers"
-INPUT=$(cat $TASK_DIR/input)
-OUTPUT="$TASK_DIR/output"
-SUCCESS="✅"
-
-TASK_NAME="${TASK_DIR%"${TASK_DIR##*[!/]}"}"
-TASK_NAME="${TASK_NAME##*/}"
-
-#
-# Run tests for day00
-#
-echo "$INPUT" | deno run "$ANSWERS_DIR/main.deno.ts" | diff - $OUTPUT
-echo "$TASK_NAME: deno $SUCCESS"
-
-echo "$INPUT" | go run "$ANSWERS_DIR/main.go" | diff - $OUTPUT
-echo "$TASK_NAME: go $SUCCESS"
-
-echo "$INPUT" | node "$ANSWERS_DIR/main.node.mjs" | diff - $OUTPUT
-echo "$TASK_NAME: node $SUCCESS"
-
-echo "$INPUT" | python3 "$ANSWERS_DIR/main.py" | diff - $OUTPUT
-echo "$TASK_NAME: python $SUCCESS"
diff --git a/scripts/versions.sh b/scripts/print-versions.sh
similarity index 100%
rename from scripts/versions.sh
rename to scripts/print-versions.sh
diff --git a/scripts/test-deno.sh b/scripts/test-deno.sh
new file mode 100755
index 00000000..54be4277
--- /dev/null
+++ b/scripts/test-deno.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+set -e
+
+# Usage:   ../test-deno.sh FILENAME     DIR
+# Example: ../test-deno.sh main.deno.ts /home/jonas/adventofcode2020/day-00-example
+
+FILENAME=$1
+DIR=$2
+
+echo "$(cat $DIR/input)" | deno run "$DIR/cmd/$FILENAME" | diff - "$DIR/output"
+echo "$DIR / deno run $FILENAME ✅"
diff --git a/scripts/test-go.sh b/scripts/test-go.sh
new file mode 100755
index 00000000..b38a7b50
--- /dev/null
+++ b/scripts/test-go.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+set -e
+
+# Usage:   ../test-go.sh FILENAME  DIR
+# Example: ../test-go.sh main.go   /home/jonas/adventofcode2020/day-00-example
+
+FILENAME=$1
+DIR=$2
+
+echo "$(cat $DIR/input)" | go run "$DIR/cmd/$FILENAME" | diff - "$DIR/output"
+echo "$DIR / go run $FILENAME ✅"
diff --git a/scripts/test-node.sh b/scripts/test-node.sh
new file mode 100755
index 00000000..f8e5e915
--- /dev/null
+++ b/scripts/test-node.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+set -e
+
+# Usage:   ../test-node.sh FILENAME     DIR
+# Example: ../test-node.sh main.node.ts /home/jonas/adventofcode2020/day-00-example
+
+FILENAME=$1
+DIR=$2
+
+echo "$(cat $DIR/input)" | node "$DIR/cmd/$FILENAME" | diff - "$DIR/output"
+echo "$DIR / node $FILENAME ✅"
diff --git a/scripts/test-py.sh b/scripts/test-py.sh
new file mode 100755
index 00000000..d4f8c625
--- /dev/null
+++ b/scripts/test-py.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+set -e
+
+# Usage:   ../test-py.sh FILENAME  DIR
+# Example: ../test-py.sh main.py   /home/jonas/adventofcode2020/day-00-example
+
+FILENAME=$1
+DIR=$2
+
+echo "$(cat $DIR/input)" | python3 "$DIR/cmd/$FILENAME" | diff - "$DIR/output"
+echo "$DIR / python3 $FILENAME ✅"

From d4ee99466de839c0fadb48e773b1ca9f0cf78512 Mon Sep 17 00:00:00 2001
From: Jonas Johan Solsvik <jonasjso@protonmail.com>
Date: Mon, 23 Nov 2020 19:09:13 +0100
Subject: [PATCH 03/12] Run day-00-example workflow only when folder is updated

---
 .../{test.yaml => day-00-example.yaml}        | 21 ++++---------------
 day-00-example/README.md                      |  2 +-
 2 files changed, 5 insertions(+), 18 deletions(-)
 rename .github/workflows/{test.yaml => day-00-example.yaml} (51%)

diff --git a/.github/workflows/test.yaml b/.github/workflows/day-00-example.yaml
similarity index 51%
rename from .github/workflows/test.yaml
rename to .github/workflows/day-00-example.yaml
index 32031bca..09d170b9 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/day-00-example.yaml
@@ -1,24 +1,11 @@
-name: test
+name: day-00-example
 on:
   push:
-    branches:
-      - main
-    paths-ignore:
-      - README.md
-
-  pull_request:
-    branches:
-      - main
-    types:
-      - opened
-      - synchronize
-      - reopened
-      - ready_for_review
-    paths-ignore:
-      - README.md
+    paths:
+    - 'day-00-example/**'
 
 jobs:
-  day-00-example:
+  test:
     runs-on: ubuntu-latest
     container:
       image: jonasjso/adventofcode2020
diff --git a/day-00-example/README.md b/day-00-example/README.md
index ddc00f08..3dd13480 100644
--- a/day-00-example/README.md
+++ b/day-00-example/README.md
@@ -1,6 +1,6 @@
 # day-00-example
 
-This example-folder sets the precedence, of how the rest of the folders should be laid out.
+This example-folder sets the precedence, for how the rest of the folders should be laid out.
 
 ## --- Part 1 ---
 

From 6f57063426e04cf5eae4b951bffac942fe23178c Mon Sep 17 00:00:00 2001
From: Jonas Johan Solsvik <jonasjso@protonmail.com>
Date: Mon, 23 Nov 2020 19:13:50 +0100
Subject: [PATCH 04/12] README.md / Add status badge

---
 .github/workflows/day-00-example.yaml | 2 +-
 README.md                             | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/day-00-example.yaml b/.github/workflows/day-00-example.yaml
index 09d170b9..cb0c3582 100644
--- a/.github/workflows/day-00-example.yaml
+++ b/.github/workflows/day-00-example.yaml
@@ -13,5 +13,5 @@ jobs:
       - uses: actions/checkout@v2
       - name: Print versions
         run: ./scripts/print-versions.sh
-      - name: Test day 00
+      - name: Run test
         run: ./day-00-example/test.sh
diff --git a/README.md b/README.md
index 07b96a61..37bc98a3 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,8 @@
 # adventofcode2020
 Solving the 2020 edition of https://adventofcode.com/ in many languages, and test the solutions using Github CI.
 
+## Status
+![day-00-example](https://github.com/Arxcis/adventofcode2020/workflows/day-00-example/badge.svg)
+
 ## References
 - Last attempt https://github.com/Arxcis/adventofcode2018/

From 0122859d548671fc781962794b460adce26387bf Mon Sep 17 00:00:00 2001
From: Jonas Johan Solsvik <jonasjso@protonmail.com>
Date: Mon, 23 Nov 2020 19:50:06 +0100
Subject: [PATCH 05/12] Update README.md

---
 README.md | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/README.md b/README.md
index 37bc98a3..ec87ff71 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,18 @@
 # adventofcode2020
 Solving the 2020 edition of https://adventofcode.com/ in many languages, and test the solutions using Github CI.
 
+## Contributing
+1. Make a branch. Example: `git checkout -b jonas/day-03`
+2. Add a file with your code, in a language of your choice. Example: `touch ./day-03/cmd/super-optimized.py`
+3. Add a test. To add a test, add a line of code to `./day-03/test.sh`. Example:
+```sh
+$DIR/../scripts/test-py.sh "super-optimized.py" $DIR
+```
+4. Make a Pull Request to the `main` branch.
+5. Get merged!
+
+NOTE: If we don't support the language you want, please make an issue and suggest a change to the `Dockerfile`.
+
 ## Status
 ![day-00-example](https://github.com/Arxcis/adventofcode2020/workflows/day-00-example/badge.svg)
 

From 60b2f5a1dab0bf827d610a8d78a0474446799e51 Mon Sep 17 00:00:00 2001
From: Jonas Johan Solsvik <jonasjso@protonmail.com>
Date: Mon, 23 Nov 2020 20:00:35 +0100
Subject: [PATCH 06/12] Add make-workflows.sh and make-scaffold.sh commands

- Not running them yet
---
 Makefile                  |  8 +++++++-
 day-00-example/test.sh    |  2 --
 scripts/make-scaffold.sh  | 34 ++++++++++++++++++++++++++++++++++
 scripts/make-workflows.sh | 24 ++++++++++++++++++++++++
 4 files changed, 65 insertions(+), 3 deletions(-)
 create mode 100755 scripts/make-scaffold.sh
 create mode 100755 scripts/make-workflows.sh

diff --git a/Makefile b/Makefile
index 995ac92e..c4945031 100644
--- a/Makefile
+++ b/Makefile
@@ -10,4 +10,10 @@ dockerpush:
 versions:
 	./scripts/print-versions.sh
 
-.PHONY: dockerbuild dockerpush test versions
+workflows:
+	./scripts/make-workflows.sh
+
+scaffold:
+	./scripts/make-scaffold.sh
+
+.PHONY: dockerbuild dockerpush test versions workflows scaffold
diff --git a/day-00-example/test.sh b/day-00-example/test.sh
index 97954a34..86ab6442 100755
--- a/day-00-example/test.sh
+++ b/day-00-example/test.sh
@@ -2,9 +2,7 @@
 set -e
 DIR=$(dirname $(realpath $0))
 
-#
 # Run tests for day-00-example
-#
 $DIR/../scripts/test-deno.sh "main.deno.ts" $DIR
 $DIR/../scripts/test-go.sh "main.go" $DIR
 $DIR/../scripts/test-node.sh "main.node.mjs" $DIR
diff --git a/scripts/make-scaffold.sh b/scripts/make-scaffold.sh
new file mode 100755
index 00000000..f540072c
--- /dev/null
+++ b/scripts/make-scaffold.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+
+for i in {01,02}
+do
+    mkdir -p "./day-$i/cmd"
+    cat > "./day-$i/cmd/.keep" << KEEP
+KEEP
+
+    cat > "./day-$i/README.md" << README
+# day-$i
+## --- Part 1 ---
+## --- Part 2 ---
+README
+
+    cat > "./day-$i/input" << INPUT
+<insert input>
+INPUT
+
+    cat > "./day-$i/output" << OUTPUT
+<insert output>
+OUTPUT
+
+    cat > "./day-$i/test.sh" << 'TEST'
+#!/bin/bash
+set -e
+DIR=$(dirname $(realpath $0))
+
+# Run tests
+# Example: $DIR/../scripts/test-deno.sh "main.deno.ts" $DIR
+TEST
+
+    chmod +x ./day-$i/test.sh
+done
+
diff --git a/scripts/make-workflows.sh b/scripts/make-workflows.sh
new file mode 100755
index 00000000..000234fc
--- /dev/null
+++ b/scripts/make-workflows.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+for i in {01,02,03,04,05,06,07,08,09,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24}
+do
+    cat > "./.github/workflows/day-$i.yaml" << WORKFLOW
+name: day-${i}
+on:
+push:
+    paths:
+    - 'day-${i}/**'
+
+jobs:
+test:
+    runs-on: ubuntu-latest
+    container:
+    image: jonasjso/adventofcode2020
+    steps:
+    - uses: actions/checkout@v2
+    - name: Print versions
+        run: ./scripts/print-versions.sh
+    - name: Run test
+        run: ./day-${i}/test.sh
+WORKFLOW
+done

From e7b043b7c158f6f2a22508a616d8e83e26a21007 Mon Sep 17 00:00:00 2001
From: Jonas Johan Solsvik <jonasjso@protonmail.com>
Date: Mon, 23 Nov 2020 21:25:02 +0100
Subject: [PATCH 07/12] Change test-**.sh API-s to take full cmd path

---
 day-00-example/test.sh |  8 ++++----
 scripts/test-deno.sh   | 12 ++++++------
 scripts/test-go.sh     | 12 ++++++------
 scripts/test-node.sh   | 12 ++++++------
 scripts/test-py.sh     | 12 ++++++------
 5 files changed, 28 insertions(+), 28 deletions(-)

diff --git a/day-00-example/test.sh b/day-00-example/test.sh
index 86ab6442..66e8a7a5 100755
--- a/day-00-example/test.sh
+++ b/day-00-example/test.sh
@@ -3,7 +3,7 @@ set -e
 DIR=$(dirname $(realpath $0))
 
 # Run tests for day-00-example
-$DIR/../scripts/test-deno.sh "main.deno.ts" $DIR
-$DIR/../scripts/test-go.sh "main.go" $DIR
-$DIR/../scripts/test-node.sh "main.node.mjs" $DIR
-$DIR/../scripts/test-py.sh "main.py" $DIR
+$DIR/../scripts/test-deno.sh $DIR "./cmd/main.deno.ts"
+$DIR/../scripts/test-go.sh   $DIR "./cmd/main.go"
+$DIR/../scripts/test-node.sh $DIR "./cmd/main.node.mjs"
+$DIR/../scripts/test-py.sh   $DIR "./cmd/main.py"
diff --git a/scripts/test-deno.sh b/scripts/test-deno.sh
index 54be4277..42711bd5 100755
--- a/scripts/test-deno.sh
+++ b/scripts/test-deno.sh
@@ -1,11 +1,11 @@
 #!/bin/bash
 set -e
 
-# Usage:   ../test-deno.sh FILENAME     DIR
-# Example: ../test-deno.sh main.deno.ts /home/jonas/adventofcode2020/day-00-example
+# Usage:   ../test-deno.sh DIR                      CMD
+# Example: ../test-deno.sh /adventofcode2020/day-03 cmd/main.deno.ts
 
-FILENAME=$1
-DIR=$2
+DIR=$1
+CMD=$2
 
-echo "$(cat $DIR/input)" | deno run "$DIR/cmd/$FILENAME" | diff - "$DIR/output"
-echo "$DIR / deno run $FILENAME ✅"
+echo "$(cat $DIR/input)" | deno run "$DIR/$CMD" | diff - "$DIR/output"
+echo "$DIR / deno run $CMD ✅"
diff --git a/scripts/test-go.sh b/scripts/test-go.sh
index b38a7b50..256d7b68 100755
--- a/scripts/test-go.sh
+++ b/scripts/test-go.sh
@@ -1,11 +1,11 @@
 #!/bin/bash
 set -e
 
-# Usage:   ../test-go.sh FILENAME  DIR
-# Example: ../test-go.sh main.go   /home/jonas/adventofcode2020/day-00-example
+# Usage:   ../test-go.sh DIR                      CMD
+# Example: ../test-go.sh /adventofcode2020/day-03 cmd/main.go
 
-FILENAME=$1
-DIR=$2
+DIR=$1
+CMD=$2
 
-echo "$(cat $DIR/input)" | go run "$DIR/cmd/$FILENAME" | diff - "$DIR/output"
-echo "$DIR / go run $FILENAME ✅"
+echo "$(cat $DIR/input)" | go run "$DIR/$CMD" | diff - "$DIR/output"
+echo "$DIR / go run $CMD ✅"
diff --git a/scripts/test-node.sh b/scripts/test-node.sh
index f8e5e915..fe7417c0 100755
--- a/scripts/test-node.sh
+++ b/scripts/test-node.sh
@@ -1,11 +1,11 @@
 #!/bin/bash
 set -e
 
-# Usage:   ../test-node.sh FILENAME     DIR
-# Example: ../test-node.sh main.node.ts /home/jonas/adventofcode2020/day-00-example
+# Usage:   ../test-node.sh DIR                      CMD
+# Example: ../test-node.sh /adventofcode2020/day-03 cmd/main.node.mjs
 
-FILENAME=$1
-DIR=$2
+DIR=$1
+CMD=$2
 
-echo "$(cat $DIR/input)" | node "$DIR/cmd/$FILENAME" | diff - "$DIR/output"
-echo "$DIR / node $FILENAME ✅"
+echo "$(cat $DIR/input)" | node "$DIR/$CMD" | diff - "$DIR/output"
+echo "$DIR / node $CMD ✅"
diff --git a/scripts/test-py.sh b/scripts/test-py.sh
index d4f8c625..312b43e8 100755
--- a/scripts/test-py.sh
+++ b/scripts/test-py.sh
@@ -1,11 +1,11 @@
 #!/bin/bash
 set -e
 
-# Usage:   ../test-py.sh FILENAME  DIR
-# Example: ../test-py.sh main.py   /home/jonas/adventofcode2020/day-00-example
+# Usage:   ../test-py.sh DIR                      CMD
+# Example: ../test-py.sh /adventofcode2020/day-03 cmd/main.py
 
-FILENAME=$1
-DIR=$2
+DIR=$1
+CMD=$2
 
-echo "$(cat $DIR/input)" | python3 "$DIR/cmd/$FILENAME" | diff - "$DIR/output"
-echo "$DIR / python3 $FILENAME ✅"
+echo "$(cat $DIR/input)" | python3 "$DIR/$CMD" | diff - "$DIR/output"
+echo "$DIR / python3 $CMD ✅"

From 07c114c4feaa06f57c08ca2dc3b46710a2751a7b Mon Sep 17 00:00:00 2001
From: Jonas Johan Solsvik <jonasjso@protonmail.com>
Date: Mon, 23 Nov 2020 21:48:26 +0100
Subject: [PATCH 08/12] Dockerfile add comment about rust-support

---
 Dockerfile | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 829a1fb1..b6ebe443 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,6 @@ LABEL github=https://github.com/Arxcis/adventofcode2020
 ENV TZ=Europe/Kiev
 RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 
-# Install all the things
 RUN apt update && apt install -yqq\
   curl\
   unzip;
@@ -23,4 +22,9 @@ RUN apt update && apt install -yqq\
   nodejs
 
   # deno v1.5.3
-RUN curl -fsSL https://deno.land/x/install/install.sh | sh && mv /root/.deno/bin/deno /bin/deno
+RUN curl -fsSL https://deno.land/x/install/install.sh | sh\
+  && mv -v /root/.deno/bin/* /bin/
+
+# @TODO Enable rust support rust v1.48
+#RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y\
+ # && mv -v /root/.cargo/bin/* /bin/

From d888e251f5822f21ff7acfb1f779529a883bcdda Mon Sep 17 00:00:00 2001
From: Jonas Johan Solsvik <jonasjso@protonmail.com>
Date: Mon, 23 Nov 2020 21:49:25 +0100
Subject: [PATCH 09/12] Update example in make-scaffold.sh

---
 scripts/make-scaffold.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/make-scaffold.sh b/scripts/make-scaffold.sh
index f540072c..d6ef34c2 100755
--- a/scripts/make-scaffold.sh
+++ b/scripts/make-scaffold.sh
@@ -26,7 +26,7 @@ set -e
 DIR=$(dirname $(realpath $0))
 
 # Run tests
-# Example: $DIR/../scripts/test-deno.sh "main.deno.ts" $DIR
+# Example: $DIR/../scripts/test-deno.sh $DIR ./cmd/main.deno.ts
 TEST
 
     chmod +x ./day-$i/test.sh

From b1bfb69531c760b00672dbb9fab084cca226424c Mon Sep 17 00:00:00 2001
From: Jonas Johan Solsvik <jonasjso@protonmail.com>
Date: Mon, 23 Nov 2020 22:21:49 +0100
Subject: [PATCH 10/12] Improve README.md

---
 README.md | 31 +++++++++++++++++++++++++------
 1 file changed, 25 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index ec87ff71..2a1f7117 100644
--- a/README.md
+++ b/README.md
@@ -3,15 +3,34 @@ Solving the 2020 edition of https://adventofcode.com/ in many languages, and tes
 
 ## Contributing
 1. Make a branch. Example: `git checkout -b jonas/day-03`
-2. Add a file with your code, in a language of your choice. Example: `touch ./day-03/cmd/super-optimized.py`
-3. Add a test. To add a test, add a line of code to `./day-03/test.sh`. Example:
+2. Write a program, in the language of your choice. Example: `vim ./day-03/cmd/super-optimized.py`
+3. Test your program.
+
+```sh
+cat ./input | python3 ./cmd/super-optimized.py | diff - ./output
+```
+
+4. Make sure your program is automatically tested by the Github CI, by adding a line of code to `./day-03/test.sh`. 
+*Example line:*
 ```sh
-$DIR/../scripts/test-py.sh "super-optimized.py" $DIR
+$DIR/../scripts/test-py.sh $DIR "./cmd/super-optimized.py"
 ```
-4. Make a Pull Request to the `main` branch.
-5. Get merged!
 
-NOTE: If we don't support the language you want, please make an issue and suggest a change to the `Dockerfile`.
+5. Make a Pull Request to the `main` branch.
+6. Get merged!
+
+**How are programs tested?**
+
+Every program gets the `input`-challenge delivered to `stdin`, and every program is expected to respond by writing the `output` - the answer to the `input`-challenge - to `stdout`.
+
+```sh
+#!/bin/bash
+cat ./input | <run-program> | diff - ./output
+```
+
+**The CI does not support my favourite language. What do I do?**
+
+If we don't support the language you want to write in, don't worry. Make an issue on `Github`, and we will add it.
 
 ## Status
 ![day-00-example](https://github.com/Arxcis/adventofcode2020/workflows/day-00-example/badge.svg)

From a6f5e57ffe4c5e8283f76ab58562f9124fd0a247 Mon Sep 17 00:00:00 2001
From: Jonas Johan Solsvik <jonasjso@protonmail.com>
Date: Mon, 23 Nov 2020 23:38:56 +0100
Subject: [PATCH 11/12] Use cat directly instead of wrapping it in echo

---
 day-00-example/test.sh | 11 +++++------
 scripts/test-deno.sh   |  2 +-
 scripts/test-go.sh     |  2 +-
 scripts/test-node.sh   |  2 +-
 scripts/test-py.sh     |  2 +-
 5 files changed, 9 insertions(+), 10 deletions(-)

diff --git a/day-00-example/test.sh b/day-00-example/test.sh
index 66e8a7a5..b80c7d46 100755
--- a/day-00-example/test.sh
+++ b/day-00-example/test.sh
@@ -1,9 +1,8 @@
 #!/bin/bash
-set -e
 DIR=$(dirname $(realpath $0))
 
-# Run tests for day-00-example
-$DIR/../scripts/test-deno.sh $DIR "./cmd/main.deno.ts"
-$DIR/../scripts/test-go.sh   $DIR "./cmd/main.go"
-$DIR/../scripts/test-node.sh $DIR "./cmd/main.node.mjs"
-$DIR/../scripts/test-py.sh   $DIR "./cmd/main.py"
+# Run tests
+$DIR/../scripts/test-deno.sh $DIR "cmd/main.deno.ts"
+$DIR/../scripts/test-go.sh   $DIR "cmd/main.go"
+$DIR/../scripts/test-node.sh $DIR "cmd/main.node.mjs"
+$DIR/../scripts/test-py.sh   $DIR "cmd/main.py"
\ No newline at end of file
diff --git a/scripts/test-deno.sh b/scripts/test-deno.sh
index 42711bd5..f988060d 100755
--- a/scripts/test-deno.sh
+++ b/scripts/test-deno.sh
@@ -7,5 +7,5 @@ set -e
 DIR=$1
 CMD=$2
 
-echo "$(cat $DIR/input)" | deno run "$DIR/$CMD" | diff - "$DIR/output"
+cat "$DIR/input" | deno run "$DIR/$CMD" | diff - "$DIR/output"
 echo "$DIR / deno run $CMD ✅"
diff --git a/scripts/test-go.sh b/scripts/test-go.sh
index 256d7b68..f7f4be1c 100755
--- a/scripts/test-go.sh
+++ b/scripts/test-go.sh
@@ -7,5 +7,5 @@ set -e
 DIR=$1
 CMD=$2
 
-echo "$(cat $DIR/input)" | go run "$DIR/$CMD" | diff - "$DIR/output"
+cat "$DIR/input" | go run "$DIR/$CMD" | diff - "$DIR/output"
 echo "$DIR / go run $CMD ✅"
diff --git a/scripts/test-node.sh b/scripts/test-node.sh
index fe7417c0..f894d230 100755
--- a/scripts/test-node.sh
+++ b/scripts/test-node.sh
@@ -7,5 +7,5 @@ set -e
 DIR=$1
 CMD=$2
 
-echo "$(cat $DIR/input)" | node "$DIR/$CMD" | diff - "$DIR/output"
+cat "$DIR/input" | node "$DIR/$CMD" | diff - "$DIR/output"
 echo "$DIR / node $CMD ✅"
diff --git a/scripts/test-py.sh b/scripts/test-py.sh
index 312b43e8..64000a57 100755
--- a/scripts/test-py.sh
+++ b/scripts/test-py.sh
@@ -7,5 +7,5 @@ set -e
 DIR=$1
 CMD=$2
 
-echo "$(cat $DIR/input)" | python3 "$DIR/$CMD" | diff - "$DIR/output"
+cat "$DIR/input" | python3 "$DIR/$CMD" | diff - "$DIR/output"
 echo "$DIR / python3 $CMD ✅"

From e75a2e938989c3205b1f32fc806f82f1362254b0 Mon Sep 17 00:00:00 2001
From: Jonas Johan Solsvik <jonasjso@protonmail.com>
Date: Mon, 23 Nov 2020 23:46:13 +0100
Subject: [PATCH 12/12] Update README.md

---
 README.md | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index 2a1f7117..8e1d50df 100644
--- a/README.md
+++ b/README.md
@@ -3,17 +3,17 @@ Solving the 2020 edition of https://adventofcode.com/ in many languages, and tes
 
 ## Contributing
 1. Make a branch. Example: `git checkout -b jonas/day-03`
-2. Write a program, in the language of your choice. Example: `vim ./day-03/cmd/super-optimized.py`
+2. Write a program, in the language of your choice. Example: `vim day-03/cmd/super-optimized.py`
 3. Test your program.
 
 ```sh
-cat ./input | python3 ./cmd/super-optimized.py | diff - ./output
+cat day-03/input | python3 day-03/cmd/super-optimized.py | diff - day-03/output
 ```
 
-4. Make sure your program is automatically tested by the Github CI, by adding a line of code to `./day-03/test.sh`. 
+4. Make sure your program is automatically tested by the Github CI, by adding a line of code to `day-03/test.sh`.
 *Example line:*
 ```sh
-$DIR/../scripts/test-py.sh $DIR "./cmd/super-optimized.py"
+$DIR/../scripts/test-py.sh $DIR "cmd/super-optimized.py"
 ```
 
 5. Make a Pull Request to the `main` branch.
@@ -21,11 +21,11 @@ $DIR/../scripts/test-py.sh $DIR "./cmd/super-optimized.py"
 
 **How are programs tested?**
 
-Every program gets the `input`-challenge delivered to `stdin`, and every program is expected to respond by writing the `output` - the answer to the `input`-challenge - to `stdout`.
+Every program gets the `input`-challenge delivered to `stdin`, and every program is expected to answer, by writing the `output`-answer to `stdout`.
 
 ```sh
 #!/bin/bash
-cat ./input | <run-program> | diff - ./output
+cat input | <run-program> | diff - output
 ```
 
 **The CI does not support my favourite language. What do I do?**