Update to Elixir 1.8

.dockerignore

@@ -1,10 +1,13 @@
-_build/
 .git/
+.elixir_ls/
+_build/
 deps/
 test/
 priv/static/
 
 .*
+coveralls.json
 docker-compose.yml
 Makefile
+CODE_OF_CONDUCT.md
 README.md

.gitignore

@@ -1,4 +1,5 @@
 # App artifacts
+/.elixir_ls
 /_build
 /db
 /deps
@@ -7,29 +8,15 @@
 # Generated on crash by the VM
 erl_crash.dump
 
-# Generated on crash by NPM
-npm-debug.log
-
-# Static artifacts
-/assets/node_modules
-
 # Since we are building assets from assets/,
 # we ignore priv/static. You may want to comment
 # this depending on your deployment strategy.
 /priv/static/
 
 # Files matching config/*.secret.exs pattern contain sensitive
 # data and you should not commit them into version control.
-#
-# Alternatively, you may comment the line below and commit the
-# secrets files as long as you replace their contents by environment
-# variables.
 /config/*.secret.exs
 
-# Dialyzer plts are stored in the repo to allow CI to cache the files
-/priv/plts/*.plt
-/priv/plts/*.plt.hash
-
 # Local environment variable files
 .env.local
 .env.*.local

Dockerfile

@@ -1,7 +1,7 @@
 #
 # Step 1 - build the OTP binary
 #
-FROM elixir:1.7.4-alpine AS builder
+FROM elixir:1.8.1-alpine AS builder
 
 ARG APP_NAME
 ARG APP_VERSION
@@ -16,7 +16,7 @@ WORKDIR /build
 # This step installs all the build tools we'll need
 RUN apk update && \
     apk upgrade --no-cache && \
-    apk add --no-cache git build-base python
+    apk add --no-cache make git openssl-dev python
 RUN mix local.rebar --force && \
     mix local.hex --force
 
@@ -38,15 +38,15 @@ RUN cd /opt/build && \
 #
 # Step 2 - build a lean runtime container
 #
-FROM alpine:3.8
+FROM alpine:3.9
 
 ARG APP_NAME
 ENV APP_NAME=${APP_NAME}
 
 # Update kernel and install runtime dependencies
 RUN apk --no-cache update && \
     apk --no-cache upgrade && \
-    apk --no-cache add bash openssl ca-certificates erlang-crypto
+    apk --no-cache add bash openssl erlang-crypto
 
 WORKDIR /opt/dispatch
 

README.md

@@ -171,10 +171,9 @@ The most common reasons as to why there was fewer requested reviews that usual (
 
 ## 🚀 Deploy
 
-### Heroku
+The application can be deployed on Heroku following the  [Container Registry & Runtime](https://devcenter.heroku.com/articles/container-registry-and-runtime) guide.
 
-The application can be deployed on Heroku using the [`heroku-buildpack-elixir`](https://github.com/HashNuke/heroku-buildpack-elixir.git) buildpack.
-
-### OTP release
-
-An _OTP release_ can be created with `make build`.
+1. Create a docker image for the _OTP release_ `make build DOCKER_IMAGE_TAG=latest`
+2. Tag the image for Heroky’s registry `docker tag dispatch:latest registry.heroku.com/dispatch/web`
+3. Push the image to the registry `docker push registry.heroku.com/dispatch/web`
+4. Release the image `heroku container:release web`

mix.exs

@@ -50,10 +50,6 @@ defmodule Dispatch.Mixfile do
       # Errors
       {:sentry, "~> 6.2"},
 
-      # Linting
-      {:credo, "~> 1.0.0", only: [:dev, :test]},
-      {:credo_envvar, "~> 0.1.0", only: ~w(dev test)a, runtime: false},
-
       # Date/time management
       {:timex, "~> 3.1"},
 
@@ -63,12 +59,16 @@ defmodule Dispatch.Mixfile do
       # OTP Release
       {:distillery, "~> 2.0"},
 
-      # Test coverage
-      {:excoveralls, "~> 0.10", only: :test},
+      # Linting
+      {:credo, "~> 1.0.0", only: ~w(dev test)a, runtime: false},
+      {:credo_envvar, "~> 0.1.0", only: ~w(dev test)a, runtime: false},
 
       # Test
       {:mock, "~> 0.2.0", only: :test},
-      {:mox, "~> 0.4.0", only: :test}
+      {:mox, "~> 0.4.0", only: :test},
+
+      # Test coverage
+      {:excoveralls, "~> 0.10", only: :test}
     ]
   end