Jason Jordan
74 lines
2.1 KiB
Docker
74 lines
2.1 KiB
Docker
# ----- Build Stage -----
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# Using a specific Ruby version (e.g., 3.3) for stability
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ARG RUBY_VERSION=3.3.9
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FROM ruby:$RUBY_VERSION as builder
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# Install system dependencies needed for Ruby gems and asset building
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RUN apt-get update -qq && apt-get install -y \
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build-essential \
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libpq-dev \
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libvips \
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nodejs \
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npm \
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git \
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curl \
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watchman \
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&& rm -rf /var/lib/apt/lists/* \
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# For TailwindCSS, install the npm package instead of relying on the system executable
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# as there have been issues with architecture mismatches in containers
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&& npm install -g tailwindcss
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# Set the working directory inside the container
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WORKDIR /usr/src/app
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# Copy and install Ruby dependencies
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COPY Gemfile Gemfile.lock ./
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RUN bundle install
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# Copy the rest of the application code
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COPY . .
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# Precompile assets for production using the installed Tailwind CLI
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# This uses the installed 'tailwindcss' executable rather than the gem's wrapper
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# RUN bundle exec rails assets:precompile
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# ----- Production Stage -----
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# Use a smaller Ruby image for the final production build
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FROM ruby:$RUBY_VERSION-slim
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# Install production system dependencies
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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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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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less \
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git \
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tdsodbc \
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freetds-dev \
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libvips \
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libpq-dev
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ENV LANG=C.UTF-8 \
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BUNDLE_JOBS=4 \
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BUNDLE_RETRY=3
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WORKDIR /usr/src/app
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# Copy runtime Ruby dependencies and the precompiled assets from the builder stage
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COPY --from=builder /usr/local/bundle /usr/local/bundle
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COPY --from=builder /usr/src/app /usr/src/app
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COPY --from=builder /usr/local/bin/watchman /usr/local/bin/watchman
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COPY --from=builder /usr/local/bin/watchman-wait /usr/local/bin/watchman-wai
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# The entrypoint script is a good practice for handling Rails server startup
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ENTRYPOINT ["./bin/docker-entrypoint-development"]
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# Expose the application port
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EXPOSE 3002
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# Set the default command to run the Rails server
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CMD ["./bin/rails", "server"]
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