ARG RUBY_VERSION="3.4.3"
ARG BASE_REGISTRY="docker.io"
ARG DEBIAN_VERSION="bookworm"
FROM ${BASE_REGISTRY}/ruby:${RUBY_VERSION}-slim-${DEBIAN_VERSION} AS base

ENV RACK_ENV="production" \
  BUNDLE_DEPLOYMENT=true \
  BUNDLE_PATH="/usr/local/bundle" \
  BUNDLE_WITHOUT="development test" \
  RUBY_YJIT_ENABLE=true

WORKDIR /kubernaut

RUN rm -f /etc/apt/apt.conf.d/docker-clean

RUN \
  --mount=type=cache,id=var-cache-apt,target=/var/cache/apt,sharing=locked \
  --mount=type=cache,id=var-lib-apt,target=/var/lib/apt,sharing=locked \
  apt-get update -qq; \
  apt-get install --yes --no-install-recommends \
  libjemalloc2

RUN \
  --mount=type=cache,id=usr-local-bundle-cache,target=${BUNDLE_PATH},sharing=locked \
  gem update --system --no-document; \
  gem install -N bundler

ENV DEBIAN_FRONTEND="noninteractive"

FROM base AS build

RUN \
  --mount=type=cache,id=var-cache-apt,target=/var/cache/apt,sharing=locked \
  --mount=type=cache,id=var-lib-apt,target=/var/lib/apt,sharing=locked \
  apt-get update -qq; \
  apt-get install --yes --no-install-recommends \
  build-essential

COPY Gemfile Gemfile.lock ./

RUN \
  --mount=type=cache,id=usr-local-bundle-ruby-cache,target=${BUNDLE_PATH}/ruby/3.4.0/cache,sharing=locked \
  bundle install

COPY . .

FROM base

ENV PORT=4567

RUN \
  groupadd --system --gid 666 kubernaut; \
  useradd --system --uid 666 --gid kubernaut --create-home --shell /bin/bash kubernaut

COPY --from=build "${BUNDLE_PATH}" "${BUNDLE_PATH}"
COPY --from=build /kubernaut /kubernaut

USER kubernaut:kubernaut

EXPOSE $PORT
ENTRYPOINT [ "/kubernaut/dockerfiles/entrypoint.sh" ]
CMD [ "bundle", "exec", "puma" ]