Ruby rails app + db in docker

Name your app

RAILS_APP_NAME=myapp

Create initial docker files

git clone git@github.com:joaocosta/docker-rails-pg.git $RAILS_APP_NAME
cd $RAILS_APP_NAME
rm -fR .git
sed -i s/myapp/$RAILS_APP_NAME/g database.yml docker-compose.yml Dockerfile .env.*

Initialize rails app

docker-compose run web rails new . --force --database=postgresql --skip-bundle

Edit Gemfile and update any required gems

vi Gemfile

Install the bundle in a reusable docker image

docker-compose build

Configure database

mv database.yml config/database.yml

Create database schema

docker-compose run web rake db:create

Run application

docker-compose up -d

Initialize new repo

echo $RAILS_APP_NAME >> .gitignore
git init .
git add -A
git commit -m "Initial commit"