Ryan W
88 lines
2.7 KiB
Docker
88 lines
2.7 KiB
Docker
# syntax=docker/dockerfile:1
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# Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
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ARG RUBY_VERSION=3.2.2
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FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim as base
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WORKDIR /rails
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# Set production environment
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ENV RAILS_ENV=production \
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BUNDLE_DEPLOYMENT=1 \
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BUNDLE_JOBS=4 \
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BUNDLE_WITHOUT=development \
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BUNDLE_PATH=/usr/local/bundle
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# Throw-away build stage to reduce size of final image
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FROM base as build
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# Install packages needed to build gems
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# NOTE: This example project intentionally does not require or install node.js
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RUN --mount=type=cache,target=/var/cache/apt \
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--mount=type=cache,target=/var/lib/apt,sharing=locked \
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--mount=type=tmpfs,target=/var/log \
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rm -f /etc/apt/apt.conf.d/docker-clean; \
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echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' > /etc/apt/apt.conf.d/keep-cache; \
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apt-get update -qq \
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&& apt-get install -yq --no-install-recommends \
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build-essential \
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gnupg2 \
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less \
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git \
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libpq-dev \
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libvips \
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pkg-config
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# Install application gems
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COPY Gemfile Gemfile.lock ./
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RUN bundle install && \
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rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git && \
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bundle exec bootsnap precompile --gemfile
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# Copy application code
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COPY . .
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# Precompile bootsnap code for faster boot times
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RUN bundle exec bootsnap precompile app/ lib/
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# Precompiling assets for production without requiring secret RAILS_MASTER_KEY
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RUN SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile
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# Final stage for app image
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FROM base
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# Install packages needed for deployment
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RUN --mount=type=cache,target=/var/cache/apt \
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--mount=type=cache,target=/var/lib/apt,sharing=locked \
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--mount=type=tmpfs,target=/var/log \
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rm -f /etc/apt/apt.conf.d/docker-clean; \
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echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' > /etc/apt/apt.conf.d/keep-cache; \
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apt-get update -qq \
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&& apt-get install -yq --no-install-recommends \
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curl \
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postgresql-client \
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libvips
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# Copy built artifacts: gems, application
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COPY --from=build /usr/local/bundle /usr/local/bundle
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COPY --from=build /rails /rails
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# Run and own only the runtime files as a non-root user for security
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RUN useradd rails --create-home --shell /bin/bash && \
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chown -R rails:rails db log storage tmp
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USER rails:rails
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# Entrypoint prepares the database.
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ENTRYPOINT ["/rails/bin/docker-entrypoint-production"]
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HEALTHCHECK --interval=5s --timeout=3s --start-period=0s --start-interval=5s --retries=3 \
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CMD curl -f http://localhost:3000/up || exit 1
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# Start the server by default, this can be overwritten at runtime
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EXPOSE 3000
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# CMD ["./bin/rails", "server"]
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CMD ["bundle", "exec", "puma", "-C", "config/puma.rb"]
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