Docker dev environment

.dockerignore

@@ -0,0 +1,5 @@
+.git*
+log/*
+tmp/*
+Dockerfile
+README.md

Dockerfile

@@ -0,0 +1,19 @@
+FROM ruby:2.3.3
+
+RUN apt-get update -qq && apt-get install -y \
+    build-essential \
+    libpq-dev \
+    nodejs
+
+ENV app /app
+ENV BUNDLE_PATH /gems
+
+RUN mkdir -p $app
+WORKDIR $app
+
+# Copy the main application.
+ADD . $app
+
+EXPOSE 3000
+
+CMD rails s -b 0.0.0.0

README.md

@@ -32,6 +32,25 @@
 9. Run server
     `bundle exec rails server`
 
+## Docker development setup
+
+Run / Stop (daemon mode)
+```bash
+$ docker-compose up -d
+$ docker-compose stop
+```
+
+Forwarded ports and access:
+
+Web: http://localhost:3000 (host machine)
+Database: postgres://postgres@localhost:6543 (host machine)
+
+Action | Command
+------------ | -------------
+Bundler | `docker-compose exec app bundle install`
+Setup DB | `docker-compose exec app bundle exec rails db:create db:migrate`
+Console | `docker-compose exec app bundle exec rails c`
+
 ## Guidelines
 
 Use the following guides for getting things done, programming well, and

bin/docker_up

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+bundle check || bundle install
+rm tmp/pids/*
+bundle exec rails s -b 0.0.0.0

circle.yml

@@ -6,4 +6,5 @@ test:
     - COVERAGE=true bin/rake
 machine:
   environment:
+    DATABASE_URL: postgres://root@localhost:5432/it61
     SECRET_KEY_BASE: abcdef123456

config/cable.yml

@@ -9,4 +9,4 @@ staging:
 
 production:
   adapter: redis
-  url: redis://localhost:6379/1
+  url: <%= ENV.fetch("REDIS_URL", "redis://localhost:6379/1") %>

config/database.yml

@@ -1,6 +1,5 @@
 development: &default
-  adapter: postgresql
-  database: it61_development
+  url: <%= ENV.fetch("DATABASE_URL") %>_development
   encoding: utf8
   min_messages: warning
   pool: <%= Integer(ENV.fetch("DB_POOL", 5)) %>
@@ -9,11 +8,11 @@ development: &default
 
 test:
   <<: *default
-  database: it61_test
+  database: <%= ENV.fetch("DATABASE_URL") %>_test
 
 production:
   encoding: utf8
   min_messages: warning
   pool: <%= [Integer(ENV.fetch("MAX_THREADS", 5)), Integer(ENV.fetch("DB_POOL", 5))].max %>
   timeout: 5000
-  url:  <%= ENV.fetch("DATABASE_URL", "") %>
+  url: <%= ENV.fetch("DATABASE_URL", "") %>

docker-compose.yml

@@ -0,0 +1,33 @@
+version: '2'
+services:
+  # Main application container
+  app:
+    build: .
+    command: bin/docker_up
+    volumes:
+      - .:/app
+    volumes_from:
+      - gems
+    ports:
+      - "3000:3000"
+    environment:
+      - DATABASE_URL=postgres://postgres@db:5432/it61
+      - REDIS_URL=redis://redis:6379/1
+    depends_on:
+      - db
+      - redis
+
+  # Mounted folder for Gemfile gems container
+  gems:
+    image: busybox
+    volumes:
+      - /gems
+
+  # Container with database
+  db:
+    image: postgres
+    ports:
+      - "6543:5432"
+
+  redis:
+    image: redis