stylisted/docker-rails repository overview

⁠convox/rails

Convox base image for Ruby on Rails

⁠Usage

FROM convox/rails

# copy only the files needed for bundle install
COPY Gemfile      /app/Gemfile
COPY Gemfile.lock /app/Gemfile.lock
RUN bundle install

# copy only the files needed for assets:precompile
COPY Rakefile   /app/Rakefile
COPY config     /app/config
COPY public     /app/public
COPY app/assets /app/app/assets
RUN rake assets:precompile

# copy the rest of the app
COPY . /app

⁠Expectations

Application using this image should:

• Copy their source files into /app
• Listen for HTTP requests on port 5000.

⁠Exports

• Listen for HTTP request on port 4000 and redirects all requests to https://.
• Listen for HTTP requests on port 4001 accepting PROXY protocol and injecting X-Forwarded-For headers.

⁠Example Configuration

Using this image in your docker-compose.yml should look something like this:

labels:
  - convox.port.443.protocol=tls
  - convox.port.443.proxy=true
ports:
  - 80:4000
  - 443:4001

⁠Includes

⁠Base Image: convox/ruby⁠

⁠Standard Ruby development headers

• libmysqld-dev
• libpq-dev
• libsqlite3-dev
• ruby-dev

⁠nginx

• Buffers incoming HTTP requests
• Accept PROXY protocol headers to discover source IP
• Inject X-Forwarded-Proto and X-Forwarded-For
• Serve /assets from disk without hitting the Rails app