# ----- Build Stage ----- # Using a specific Ruby version (e.g., 3.3) for stability ARG RUBY_VERSION=3.4.8 FROM docker.io/library/ruby:$RUBY_VERSION-slim as base # Install production system dependencies RUN --mount=type=cache,target=/var/cache/apt \ --mount=type=cache,target=/var/lib/apt,sharing=locked \ --mount=type=tmpfs,target=/var/log \ rm -f /etc/apt/apt.conf.d/docker-clean; \ apt-get update -qq \ && apt-get install -yq --no-install-recommends \ build-essential \ less \ git \ tdsodbc \ freetds-dev \ libvips \ libpq-dev \ libyaml-dev ENV LANG=C.UTF-8 \ BUNDLE_JOBS=4 \ BUNDLE_RETRY=3 WORKDIR /usr/src/app RUN gem install foreman # Copy runtime Ruby dependencies and the precompiled assets from the builder stage # COPY --from=builder /usr/local/bundle /usr/local/bundle # COPY --from=builder /usr/src/app /usr/src/app # COPY --from=watchman_builder /usr/local/bin/watchman /usr/local/bin/watchman # COPY --from=watchman_builder /usr/local/bin/watchman-wait /usr/local/bin/watchman-wait # RUN mkdir -p /usr/local/var/run/watchman \ # && touch /usr/local/var/run/watchman/.not-empty \ # && chmod 2777 /usr/local/var/run/watchman # The entrypoint script is a good practice for handling Rails server startup ENTRYPOINT ["./bin/docker-entrypoint-development"] # Expose the application port EXPOSE 3002 # Set the default command to run the Rails server CMD ["./bin/dev"]