Dockerfile

# syntax = docker/dockerfile:experimental
ARG RUBY_VERSION=3.3.4
ARG VARIANT=jemalloc-slim
FROM quay.io/evl.ms/fullstaq-ruby:${RUBY_VERSION}-${VARIANT} as base

ARG NODE_VERSION=20
ARG BUNDLER_VERSION=2.5.14
ENV BUNDLER_VERSION=${BUNDLER_VERSION}

ARG RAILS_ENV=production
ENV RAILS_ENV=${RAILS_ENV}

ENV RAILS_SERVE_STATIC_FILES true
ENV RAILS_LOG_TO_STDOUT true

ARG BUNDLE_WITHOUT=development:test
ARG BUNDLE_PATH=vendor/bundle
ENV BUNDLE_PATH ${BUNDLE_PATH}
ENV BUNDLE_WITHOUT ${BUNDLE_WITHOUT}

RUN mkdir /app
WORKDIR /app
RUN mkdir -p tmp/pids

SHELL ["/bin/bash", "-c"]

ENV BASH_ENV ~/.bashrc

FROM base as build_deps

ARG DEV_PACKAGES="git build-essential libpq-dev wget vim curl gzip xz-utils libsqlite3-dev libyaml-dev"
ENV DEV_PACKAGES ${DEV_PACKAGES}

RUN --mount=type=cache,id=dev-apt-cache,sharing=locked,target=/var/cache/apt \
    --mount=type=cache,id=dev-apt-lib,sharing=locked,target=/var/lib/apt \
    apt-get update -qq && \
    apt-get install --no-install-recommends -y ${DEV_PACKAGES} \
    && rm -rf /var/lib/apt/lists /var/cache/apt/archives

FROM build_deps as gems

# https://community.fly.io/t/a-couple-issues-with-the-dockerfile-generated-for-a-rails-detected-app/6242
# RUN gem install -N bundler -v ${BUNDLER_VERSION}
RUN gem update --system --no-document && \
    gem install -N bundler -v ${BUNDLER_VERSION}

COPY Gemfile* ./
RUN bundle install &&  rm -rf vendor/bundle/ruby/*/cache

FROM base

ARG PROD_PACKAGES="file vim curl gzip libsqlite3-0 imagemagick libvips-dev"
ENV PROD_PACKAGES=${PROD_PACKAGES}

RUN --mount=type=cache,id=prod-apt-cache,sharing=locked,target=/var/cache/apt \
    --mount=type=cache,id=prod-apt-lib,sharing=locked,target=/var/lib/apt \
    apt-get update -qq && \
    apt-get install --no-install-recommends -y \
    ${PROD_PACKAGES} \
    && rm -rf /var/lib/apt/lists /var/cache/apt/archives

COPY --from=gems /app /app
COPY --from=gems /usr/lib/fullstaq-ruby/versions /usr/lib/fullstaq-ruby/versions
COPY --from=gems /usr/local/bundle /usr/local/bundle

ENV SECRET_KEY_BASE 1

COPY . .

RUN bundle exec rails assets:precompile

ENV PORT 8080

ARG SERVER_COMMAND="bundle exec puma -C config/puma.rb"
ENV SERVER_COMMAND ${SERVER_COMMAND}
CMD ${SERVER_COMMAND}