docker-compose.yml

services:
  docs:
    # By default, docker-compose up --build builds docs for a development
    # environment (no Google Analytics, omitting some enterprise redirects,
    # etc.
    #
    # To test a "production" build, override the environment using:
    #
    # JEKYLL_ENV=production docker-compose up --build
    build:
      args:
        # FIXME: docker-compose should behave the same as the docker CLI here
        # and if `JEKYLL_ENV` is not set in the current environment, ignore
        # the --build-arg, and use the default that's defined in the Dockerfile.
        # Setting a default here as a workaround.
        # - JEKYLL_ENV
        - JEKYLL_ENV=${JEKYLL_ENV:-development}
      context: .
    image: docs/docstage
    ports:
     - "4000:4000"