Dockerfile.worker

# syntax=docker/dockerfile:1
# Worker Dockerfile for running Solid Queue supervisor

# Make sure RUBY_VERSION matches the Ruby version in .ruby-version
ARG RUBY_VERSION=3.4.7
FROM docker.io/library/ruby:$RUBY_VERSION-slim AS base

# Rails app lives here
WORKDIR /rails

# Install base packages (wget needed for Coolify health checks)
RUN apt-get update -qq && \
    apt-get install --no-install-recommends -y \
      curl \
      wget \
      libjemalloc2 \
      libvips \
      postgresql-client \
      python3 python3-venv python3-pip \
      libzbar0 libgl1 libglib2.0-0 && \
    ln -s /usr/lib/$(uname -m)-linux-gnu/libjemalloc.so.2 /usr/local/lib/libjemalloc.so && \
    rm -rf /var/lib/apt/lists /var/cache/apt/archives

# Set production environment variables and enable jemalloc for reduced memory usage and latency.
ENV RAILS_ENV="production" \
    BUNDLE_DEPLOYMENT="1" \
    BUNDLE_PATH="/usr/local/bundle" \
    BUNDLE_WITHOUT="development" \
    LD_PRELOAD="/usr/local/lib/libjemalloc.so"

# Throw-away build stage to reduce size of final image
FROM base AS build

# Install packages needed to build gems
RUN apt-get update -qq && \
    apt-get install --no-install-recommends -y build-essential git libpq-dev libyaml-dev pkg-config nodejs npm && \
    rm -rf /var/lib/apt/lists /var/cache/apt/archives

# Install application gems
COPY Gemfile Gemfile.lock vendor ./

RUN bundle install && \
    rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git && \
    # -j 1 disable parallel compilation to avoid a QEMU bug: https://github.com/rails/bootsnap/issues/495
    bundle exec bootsnap precompile -j 1 --gemfile

# Copy application code
COPY . .

RUN if [ -f package-lock.json ]; then npm ci; else npm install; fi

# Precompile bootsnap code for faster boot times.
# -j 1 disable parallel compilation to avoid a QEMU bug: https://github.com/rails/bootsnap/issues/495
RUN bundle exec bootsnap precompile -j 1 app/ lib/

# Final stage for app image
FROM base

# Run and own only the runtime files as a non-root user for security
RUN groupadd --system --gid 1000 rails && \
    useradd rails --uid 1000 --gid 1000 --create-home --shell /bin/bash
USER 1000:1000

# Copy built artifacts: gems, application
COPY --chown=rails:rails --from=build "${BUNDLE_PATH}" "${BUNDLE_PATH}"
COPY --chown=rails:rails --from=build /rails /rails

# Entrypoint prepares the database.
ENTRYPOINT ["/rails/bin/docker-entrypoint"]

# Health check for rolling/blue-green deployments
# Worker exposes health on port 4447
HEALTHCHECK --interval=10s --timeout=10s --start-period=30s --retries=3 \
  CMD curl -fsS http://localhost:4447/health || exit 1

# Expose worker health port
EXPOSE 4447
ENV WORKER_HEALTH_PORT=4447

# Start Solid Queue supervisor
CMD ["./bin/jobs"]