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UPDATE: You can now use the DockRails Gem to build your Docker Rails Enironment with a simple CLI

About

This is a boilerplate Docker environment for you Rails App letting you code on your Mac while running in Docker, it includes by default:

  • DB container (PGSQL or MYSQL uncomment in docker-compose.yml)
  • Redis container
  • Web container (your rails app)
  • Job Container (Sidekiq instance)

Web/Job containers sync code base from your Rails App in realtime, letting you code on you Mac and run in the same time everything from the container

Bundler Gems, DB and Redis data are persisted accross restart and you can use ByeBug or Pry out of the box with a simple command!

Pre-requisite

First install:

Steps

  1. Clone you Rails app inside the "my-rails-app" folder (If you rename it make sure to change the name in the docker-sync file)

  2. Move the scripts/ folder into your Rails App root folder

  3. Create a data/sql folder (info: adding a .gitkeep inside will make the PG container fail)

  4. Check the docker-compose.yml ENV variables for Redis/SQL and setup your database.yml in your Rails App file.

  5. Run everything

docker-sync-stack start

Important Commands

Start all containers:

  • docker-sync-stack start

Stop all containers:

  • docker-sync-stack clear

Check all containers are stopped

  • docker ps

Run command inside a container

  • docker-compose run CONTAINER COMMAND (ex: docker-compose run web rake db:migrate)

Rebuild a container in case the DockerFile change:

  • docker-compose build CONTAINER

Need to debug a container?

  • docker-compose run CONTAINER /bin/bash

Need to access ByeBug or Pry interactve shell?

  • docker attach $(docker-compose ps -q web) ⚠️ DO NOT use CTRL+C here or it will exit the container but use CTRL+Q+P

Type less with ZSH Alias!

vi ~/.zshrc

# Add those lines
alias dss="docker-sync-stack"
alias dbe="docker-compose run web bundle exec"
alias dbi="docker-compose run web bundle install"
function ddbug(){
  docker attach $(docker-compose ps -q $1)
}

Reload ZSH

source ~/.zshrc

And now enjoy the simple commands like:

  • dss start
  • dbe rails c
  • dbe rails restart
  • dbi
  • ddbug web

And obviously create your own!

Miscs

  • Your DB is accessible from your host machine with the 127.0.0.1 IP and using the user/password combination found in docker-compose.yml file.

Thanks to Jesal Gadhis, this project was inspired by his tutorial