README.md

hello-docker-rails

This project was inspired by xtity/hello-docker-rails.

Hello-docker-rails is a docker container for experimenting with a rails docker container. This container requires an instance of mysql to connect to.

Environment variables

In addition to the default rails environment variables the following variables might be useful:

Variable	Meaning	Default
MYSQL_USER	User used to login to mysql	root
MYSQL_PASSWORD	Password used to login to mysql
MYSQL_HOST	Host where mysql is located
MYSQL_PORT	Port of mysql	3306
RAILS_ENV	Rails environment (Note: this container 404s in production)	development
SECRET_KEY_BASE	Used by rails to verify the integrity of signed cookies (Must be changed in production systems)	3776e3901...

Getting started using docker

To use this container with docker first install docker. See docker documentation for details

#create network
docker network create hello-rails

# Run Mysql Server
docker run -p 3306 -d --network=hello-rails --network-alias=db -e MYSQL_ROOT_PASSWORD=password --name hello-rails-db mysql

# Run app server
docker run -it -p 3000:3000 --network=hello-rails -e MYSQL_USER=root -e MYSQL_PASSWORD=password -e MYSQL_HOST=db --name hello-rails shopify/hello-docker-rails:latest

Rails application should be available on localhost:3000

To clean up delete the hello-rails network and the created containers.

# stop containers if it is running
docker stop hello-rails-db hello-rails

# delete containers
docker rm hello-rails-db hello-rails

# delete network
docker network rm hello-rails

Using docker-compose

git clone https://github.com/shopify/hello-docker-rails.git
docker-compose up

To clean up

docker-compose down
docker-compose rm

Licence

The MIT License (MIT)