dwoodwardgb / rails-on-docker

Working Rails 6.1 demo application with PostgreSQL, Docker, Webpacker and GitHub Actions

Rails 6 on Docker demo application

This app demonstrates Rails 6 with PostgreSQL and Webpacker, all running in Docker.

Initial setup

$ docker compose build
$ docker compose run --rm web bin/rails db:setup

Running the Rails app

$ docker compose up

Running the Rails console

When the app is already running with docker-compose up, attach to the container:

$ docker compose exec web bin/rails c

When no container running yet, start up a new one:

$ docker compose run --rm web bin/rails c

Running tests

$ docker compose run --rm web bundle exec rspec

Updating gems

$ docker compose run --rm web bundle update
$ docker compose up --build

Updating Yarn packages

$ docker compose run --rm web yarn upgrade
$ docker compose up --build

Credits/References

• https://docs.docker.com/compose/rails/
• https://rubyinrails.com/2019/03/29/dockerify-rails-6-application-setup/
• https://pragprog.com/book/ridocker/docker-for-rails-developers
• https://evilmartians.com/chronicles/ruby-on-whales-docker-for-ruby-rails-development
• https://medium.com/@cristian_rivera/cache-rails-bundle-w-docker-compose-45512d952c2d

For Webpack dev server:

• https://github.com/rails/webpacker/blob/master/docs/docker.md
• rails/webpacker#863
• rails/webpacker#1019