50 lines
2.4 KiB
Markdown
50 lines
2.4 KiB
Markdown
# Tags and `Dockerfile` links
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- [`4.1.5`, `4.1`, `4`, `latest` (*Dockerfile*)](https://github.com/docker-library/rails/blob/2f86b2e73f46be25d780575f0b6e9ad03b60880e/Dockerfile)
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- [`onbuild` (*onbuild/Dockerfile*)](https://github.com/docker-library/rails/blob/7bb6ade7f97129cc58967d7d0ae17f4b62ae52eb/onbuild/Dockerfile)
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# What is Ruby on Rails?
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Ruby on Rails, often simply referred to as Rails, is an open source web application framework which runs via the Ruby programming language. It is a full-stack framework: it allows creating pages and applications that gather information from the web server, talk to or query the database, and render templates out of the box. As a result, Rails features a routing system that is independent of the web server.
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> [wikipedia.org/wiki/Ruby_on_Rails](https://en.wikipedia.org/wiki/Ruby_on_Rails)
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# How to use this image
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## Create a `Dockerfile` in your rails app project
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FROM rails:onbuild
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Put this file in the root of your app, next to the `Gemfile`.
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This image includes multiple `ONBUILD` triggers so that should be all that you need for most applications. The build will `COPY . /usr/src/app`, `RUN bundle install`, `EXPOSE 3000`, and set the default command to `rails server`.
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Then build and run the docker image.
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docker build -t my-rails-app .
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docker run --name some-rails-app -d my-rails-app
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Test it by visiting `http://container-ip:3000` in a browser. On the other hand, if you need access outside the host on port 8080:
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docker run --name some-rails-app -p 8080:3000 -d my-rails-app
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Then hit `http://localhost:8080` or `http://host-ip:8080` in a browser.
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# User Feedback
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## Issues
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If you have any problems with, or questions about this image, please contact us
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through a [GitHub issue](https://github.com/docker-library/rails/issues) or via the IRC channel
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`#docker-library` on [Freenode](https://freenode.net).
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## Contributing
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You are invited to contribute new features, fixes, or updates, large or small; we are
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always thrilled to receive pull requests, and do our best to process them as fast as
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we can.
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Before you start to code, we recommend discussing your plans through a
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[GitHub issue](https://github.com/docker-library/rails/issues), especially for more ambitious contributions. This gives
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other contributors a chance to point you in the right direction, give you feedback on
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your design, and help you find out if someone else is working on the same thing.
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