FROM ruby:2.4 # Install dependencies RUN deps='libmagic-dev chromium' && \ apt-get update && \ apt-get install --no-install-recommends -y $deps && \ rm -Rf /var/lib/apt/lists/* /var/cache/apt/* ENV PORT=3000 \ SMTP_SERVER_PORT=2525 \ RAILS_ENV=development \ RAILS_LOG_TO_STDOUT=true \ RAILS_SERVE_STATIC_FILES=true \ \ CHROMIUM_FLAGS=--no-sandbox \ \ BUNDLE_PATH=/home/app/bundle \ BUNDLE_APP_CONFIG=/home/app/bundle/config # Run app and all commands as user 'app'. This avoids changing permissions # for files in mounted volume. Symlink for similarity with production image. RUN adduser --gecos GECOS --disabled-password --shell /bin/bash app && \ ln -s /home/app/src /usr/src/app USER app WORKDIR /home/app/src # Copy files needed for installing gem dependencies, and install them. COPY Gemfile Gemfile.lock ./ COPY plugins ./plugins RUN bundle config build.nokogiri "--use-system-libraries" && \ bundle install --frozen -j 4 # Copy the application code COPY . ./ EXPOSE 3000 # cleanup, and by default start web process from Procfile ENTRYPOINT ["./docker-entrypoint.sh"] CMD ["./proc-start", "web"]