Install docker and pack cli from https://buildpacks.io/docs/tools/pack/
Build the image
pack build rails_example
Setup the database
docker run -e DATABASE_URL=postgres://admin:admin@127.0.0.1/rails_example?pool=5 -e SECRET_KEY_BASE=example --net=host rails-example rake db:setup
Run it (we suppose you already installed postgres)
docker run -e DATABASE_URL=postgres://admin:admin@127.0.0.1/rails_example?pool=5 -e SECRET_KEY_BASE=example --net=host rails-example
You should be able to access to http://127.0.0.1:5000/posts
This is free software, and may be redistributed under the terms specified in the LICENSE file.