This example demonstrates how to run a Rails application that uses PostgreSQL.
services:
db:
image: postgres:10.13
environment:
- POSTGRES_PASSWORD=password
web:
public: true
cmd: bash -c "rm -f tmp/pids/server.pid && bundle exec rails s -p 3000 -b '0.0.0.0'"
port: 3000
depends_on:
- db
steps:
- name: createdb
service: web
cmd: rake db:create