docker-rails

Version

Rails 4.1.7

Build from repository

(https://github.com/jllopis/docker-rails)

$ git clone git@github.com:jllopis/docker-rails.git
$ cd docker-rails
$ docker build t my_user/rails:latest

Start

This image is intended to be used as base image for Ruby+Rails based application containers.

It comes with Rails installed as well as some dependencies.

It does not define a CMD but it defines a default ENTRYPOINT which is a script ADDED from the Dockerfile directory.

If you want to start the image you can do

$ docker run -t -i --entrypoint /bin/bash rails:4.1.7 -l

How to use it

To build from it, you need in the same directory of this Dockerfile the following:

• . directory which contains your rails application (ex: git clone git@gitorious.server.com:observer.git && cd observer). This directory will be added to the image in /opt/app
• run.sh which is a shell script that will run on container start and thus will run your app and its dependencies.

Also, you should also EXPOSE the ports needed or specify them when the docker run command.

A minimal run.sh script:

#!/usr/bin/env bash
# By: Joan Llopis <jllopis@acb.es>

cd $RAILS_APP_ROOT
bundle install

echo "Starting app..."
rails s