https://coderjourney.com/convert-rails-app-to-docker/

POSTGRES_USER=anmolag POSTGRES_PASSWORD=password1

docker-compose up -d db docker-compose build app docker-compose run --rm app rake db:create db:migrate db:seed docker-compose up -d app docker-machine ip

docker exec -it blog_app_1 /bin/bash

docker-compose start docker-compose stop