Test

Dockerfile

@@ -0,0 +1,17 @@
+FROM ruby:2.5.1
+RUN apt-get update -qq && apt-get install -y nodejs postgresql-client
+RUN mkdir /myapp
+WORKDIR /myapp
+COPY Gemfile /myapp/Gemfile
+COPY Gemfile.lock /myapp/Gemfile.lock
+RUN bundle install
+COPY . /myapp
+
+# Add a script to be executed every time the container starts.
+COPY entrypoint.sh /usr/bin/
+RUN chmod +x /usr/bin/entrypoint.sh
+ENTRYPOINT ["entrypoint.sh"]
+EXPOSE 3000
+
+# Start the main process.
+CMD ["rails", "server", "-b", "0.0.0.0"]

config/initializers/environment.rb

@@ -7,7 +7,7 @@
   ENV['DB_PASS_DEV'] = 'sdcdev'
   ENV['DB_USER_DEV'] = 'postgres'
   ENV['DB_NAME_DEV'] = 'sdc'
-  ENV['DB_HOST_DEV'] = 'localhost'
+  ENV['DB_HOST_DEV'] = 'db'
   ENV['DB_PORT_DEV'] = '5432'
   ENV['DB_TIMEOUT_DEV'] = '5000'
   ENV['DB_ADAPTER_DEV'] = 'postgresql'

docker-compose.yml

@@ -0,0 +1,21 @@
+version: '3'
+services:
+  db:
+    image: postgres
+    volumes:
+      - ./tmp/db:/var/lib/postgresql/data
+    environment:
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=sdcdev
+      - POSTGRES_DB=sdc
+    ports:
+      - "5432:5432"
+  web:
+    build: .
+    command: bash -c "rm -f tmp/pids/server.pid && bundle exec rails s -p 3000 -b '0.0.0.0'"
+    volumes:
+      - .:/myapp
+    ports:
+      - "3000:3000"
+    depends_on:
+      - db

entrypoint.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+set -e
+
+# Remove a potentially pre-existing server.pid for Rails.
+rm -f /myapp/tmp/pids/server.pid
+
+# Then exec the container's main process (what's set as CMD in the Dockerfile).
+exec "$@"

heroku.yml

@@ -0,0 +1,12 @@
+build:
+  docker:
+    web: Dockerfile
+  config:
+    BUNDLE_INSTALL_ARGS: --jobs 10 --retry=3 --without development test
+    RAILS_ENV: production
+run:
+  web: bundle exec puma -C config/puma.rb
+  worker:
+    command:
+      - bundle exec rake jobs:work
+    image: web