# syntax = docker/dockerfile:1 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile ARG RUBY_VERSION=<%= gem_ruby_version %> FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim as base # Rails app lives here WORKDIR /rails # Set production environment ENV RAILS_ENV="production" \ BUNDLE_DEPLOYMENT="1" \ BUNDLE_PATH="/usr/local/bundle" \ BUNDLE_WITHOUT="development" # Throw-away build stage to reduce size of final image FROM base as build # Install packages needed to build gems<%= using_node? ? " and node modules" : "" %> RUN apt-get update -qq && \ apt-get install --no-install-recommends -y <%= dockerfile_build_packages.join(" ") %> <% if using_node? -%> # Install JavaScript dependencies ARG NODE_VERSION=<%= node_version %> ARG YARN_VERSION=<%= dockerfile_yarn_version %> ENV PATH=/usr/local/node/bin:$PATH RUN curl -sL https://github.com/nodenv/node-build/archive/master.tar.gz | tar xz -C /tmp/ && \ /tmp/node-build-master/bin/node-build "${NODE_VERSION}" /usr/local/node && \ npm install -g yarn@$YARN_VERSION && \ rm -rf /tmp/node-build-master <% end -%> <% if using_bun? -%> ENV BUN_INSTALL=/usr/local/bun ENV PATH=/usr/local/bun/bin:$PATH ARG BUN_VERSION=<%= dockerfile_bun_version %> RUN curl -fsSL https://bun.sh/install | bash -s -- "bun-v${BUN_VERSION}" <% end -%> # Install application gems COPY Gemfile Gemfile.lock ./ RUN bundle install && \ rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git<% if depend_on_bootsnap? -%> && \ bundle exec bootsnap precompile --gemfile<% end %> <% if using_node? -%> # Install node modules COPY package.json yarn.lock ./ RUN yarn install --frozen-lockfile <% end -%> <% if using_bun? -%> # Install node modules COPY package.json bun.lockb ./ RUN bun install --frozen-lockfile <% end -%> # Copy application code COPY . . <% if depend_on_bootsnap? -%> # Precompile bootsnap code for faster boot times RUN bundle exec bootsnap precompile app/ lib/ <% end -%> <% unless dockerfile_binfile_fixups.empty? -%> # Adjust binfiles to be executable on Linux <%= "RUN " + dockerfile_binfile_fixups.join(" && \\\n ") %> <% end -%> <% unless options.api? || skip_asset_pipeline? -%> # Precompiling assets for production without requiring secret RAILS_MASTER_KEY RUN SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile <% end -%> # Final stage for app image FROM base <% unless dockerfile_deploy_packages.empty? -%> # Install packages needed for deployment RUN apt-get update -qq && \ apt-get install --no-install-recommends -y <%= dockerfile_deploy_packages.join(" ") %> && \ rm -rf /var/lib/apt/lists /var/cache/apt/archives <% end -%> # Copy built artifacts: gems, application COPY --from=build /usr/local/bundle /usr/local/bundle COPY --from=build /rails /rails # Run and own only the runtime files as a non-root user for security RUN useradd rails --create-home --shell /bin/bash && \ chown -R rails:rails <%= dockerfile_chown_directories.join(" ") %> USER rails:rails # Entrypoint prepares the database. ENTRYPOINT ["/rails/bin/docker-entrypoint"] # Start the server by default, this can be overwritten at runtime EXPOSE 3000 CMD ["./bin/rails", "server"]