36 lines
1.3 KiB
Markdown
36 lines
1.3 KiB
Markdown
# What is Ruby on Rails?
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Ruby on Rails or, simply, Rails is an open source web application framework
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which runs on the Ruby programming language. It is a full-stack framework. This
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means that "out of the box", Rails can create pages and applications that gather
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information from a web server, talk to or query a database, and render
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templates. As a result, Rails features a routing system that is independent of
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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 which should cover most
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applications. The build will `COPY . /usr/src/app`, `RUN bundle install`,
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`EXPOSE 3000`, and set the default command to `rails server`.
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You can 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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You can test it by visiting `http://container-ip:3000` in a browser or, if you
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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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You can then go to `http://localhost:8080` or `http://host-ip:8080` in a
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browser.
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