Dockerfile.production

# syntax = docker/dockerfile:1

# Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
ARG RUBY_VERSION=3.3.0
FROM ruby:$RUBY_VERSION-slim as base

LABEL fly_launch_runtime="rails"

# Rails app lives here
WORKDIR /rails

# Set production environment
ENV RAILS_ENV="production" \
    BUNDLE_WITHOUT="development:test" \
    BUNDLE_DEPLOYMENT="1"

# Update gems and bundler
RUN gem update --system --no-document && \
    gem install -N bundler


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

# Install packages needed to build gems and node modules
RUN apt-get update -qq && \
    apt-get install --no-install-recommends -y build-essential curl libpq-dev libvips node-gyp pkg-config python-is-python3

# Install JavaScript dependencies
ARG NODE_VERSION=20.9.0
ARG YARN_VERSION=1.22.19
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

# Install application gems
COPY --link Gemfile Gemfile.lock .ruby-version ./
RUN bundle install && \
    bundle exec bootsnap precompile --gemfile && \
    rm -rf ~/.bundle/ $BUNDLE_PATH/ruby/*/cache $BUNDLE_PATH/ruby/*/bundler/gems/*/.git

# Install node modules
COPY --link package.json yarn.lock ./
RUN yarn install --frozen-lockfile

# Copy application code
COPY --link . .

# Precompile bootsnap code for faster boot times
RUN bundle exec bootsnap precompile app/ lib/

# We need these environment variables set in order to compile assets
# https://fly.io/docs/rails/getting-started/existing/#common-initial-deployment-issues
#
ENV AWS_ENDPOINT_URL_S3="https://fly.storage.tigris.dev" \
    AWS_ACCESS_KEY_ID="key" \
    AWS_SECRET_ACCESS_KEY="secret" \
    AWS_REGION="eu" \
    BUCKET_NAME="bucket"

# Precompiling assets for production without requiring secret RAILS_MASTER_KEY
RUN SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile

# Final stage for app image
FROM base

# Install packages needed for deployment
RUN apt-get update -qq && \
    apt-get install --no-install-recommends -y curl imagemagick libvips postgresql-client nodejs libjemalloc2 && \
    rm -rf /var/lib/apt/lists /var/cache/apt/archives

# Enable jemalloc (installed in the prev step) for better memory performance
# https://fly.io/docs/rails/cookbooks/deploy/#jemalloc
# And enable YJIT for better Ruby performance
# https://fly.io/docs/rails/cookbooks/deploy/#yjit
#
ENV LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so.2 \
    MALLOC_CONF=dirty_decay_ms:1000,narenas:2,background_thread:true \
    RUBY_YJIT_ENABLE=1

# 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 db log storage tmp
USER rails:rails

# Deployment options
ENV RAILS_LOG_TO_STDOUT="1" \
    RAILS_SERVE_STATIC_FILES="true"

# Entrypoint sets up the container.
ENTRYPOINT ["/rails/bin/docker-entrypoint"]

# Start the server by default, this can be overwritten at runtime
EXPOSE 3000
CMD ["bundle", "exec", "puma", "-C", "config/puma.rb"]