71 lines
2.3 KiB
Docker
71 lines
2.3 KiB
Docker
# syntax = docker/dockerfile:1
|
|
|
|
# This Dockerfile is designed for production, not development. Use with Kamal or build'n'run by hand:
|
|
# docker build -t my-app .
|
|
# docker run -d -p 80:80 -p 443:443 --name my-app -e RAILS_MASTER_KEY=<value from config/master.key> my-app
|
|
|
|
# For a containerized dev environment, see Dev Containers: https://guides.rubyonrails.org/getting_started_with_devcontainer.html
|
|
|
|
# Make sure RUBY_VERSION matches the Ruby version in .ruby-version
|
|
ARG RUBY_VERSION=3.3.6
|
|
FROM docker.io/library/ruby:$RUBY_VERSION-slim AS base
|
|
|
|
# Rails app lives here
|
|
WORKDIR /rails
|
|
|
|
# Install base packages
|
|
RUN apt-get update -qq && \
|
|
apt-get install --no-install-recommends -y curl libjemalloc2 libsqlite3-0 libvips && \
|
|
rm -rf /var/lib/apt/lists /var/cache/apt/archives
|
|
|
|
# Set production environment
|
|
ENV RAILS_ENV="production" \
|
|
BUNDLE_DEPLOYMENT="1" \
|
|
BUNDLE_PATH="/usr/local/bundle" \
|
|
BUNDLE_WITHOUT="development"
|
|
|
|
# Throw-away build stage to reduce size of final image
|
|
FROM base AS build
|
|
|
|
# Install packages needed to build gems
|
|
RUN apt-get update -qq && \
|
|
apt-get install --no-install-recommends -y build-essential git pkg-config && \
|
|
rm -rf /var/lib/apt/lists /var/cache/apt/archives
|
|
|
|
# Install application gems
|
|
COPY Gemfile Gemfile.lock ./
|
|
RUN bundle install && \
|
|
rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git && \
|
|
bundle exec bootsnap precompile --gemfile
|
|
|
|
# Copy application code
|
|
COPY . .
|
|
|
|
# Precompile bootsnap code for faster boot times
|
|
RUN bundle exec bootsnap precompile app/ lib/
|
|
|
|
# Precompiling assets for production without requiring secret RAILS_MASTER_KEY
|
|
RUN SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile
|
|
|
|
|
|
|
|
|
|
# Final stage for app image
|
|
FROM base
|
|
|
|
# Copy built artifacts: gems, application
|
|
COPY --from=build "${BUNDLE_PATH}" "${BUNDLE_PATH}"
|
|
COPY --from=build /rails /rails
|
|
|
|
# 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 && \
|
|
chown -R rails:rails db log storage tmp
|
|
USER 1000:1000
|
|
|
|
# Entrypoint prepares the database.
|
|
ENTRYPOINT ["/rails/bin/docker-entrypoint"]
|
|
|
|
# Start the server by default, this can be overwritten at runtime
|
|
EXPOSE 3000
|
|
CMD ["./bin/rails", "server"]
|