#Ruby Sinatra docker
Docker for hosting Sinatra apps
##Running your Sinatra app
docker run --name my-sinatra-app
-p 80:80
-v /path/to/sinatra/app:/usr/src/app
-e MAIN_APP_FILE=my-app.rb
-d erikap/ruby-sinatra
The Docker image exposes port 80.
The Ruby source code is mounted in /usr/src/app. The main Sinatra file is configured at container start up via the MAIN_APP_FILE environment variable. If not set, it defaults to web.rb.
Dependencies can be installed through Bundler by providing a Gemfile. The Sinatra gem is installed by default. The environment can be set via the RACK_ENV environment variable. If not set, it defaults to production.