FROM ruby:2.6.5

ENV LANG=C.UTF-8
ENV ENABLE_SERVICE_WORKER=true

ARG USER_ID
ARG GROUP_ID

RUN apt-get update && \
    apt-get -y install git nodejs libcurl4 sudo && \
    gem install bundler

# Create the dev user, add them to sudoers and set up a home dir
RUN if [ ${USER_ID:-0} -ne 0 ] && [ ${GROUP_ID:-0} -ne 0 ]; then \
    groupadd -g ${GROUP_ID} devuser &&\
    useradd -l -u ${USER_ID} -g devuser devuser &&\
    usermod -aG sudo devuser &&\
    echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers &&\
    install -d -m 0755 -o devuser -g devuser /home/devuser &&\
    chown --changes --silent --no-dereference --recursive \
          --from=33:33 ${USER_ID}:${GROUP_ID} \
        /home/devuser \
    ;fi

# Host directories cannot be mounted by Dockerfiles so we have to use
# a temporary directory to hold the lock files while the gems are installed.
WORKDIR /devdocs/

COPY Gemfile Gemfile.lock Rakefile /devdocs/

RUN bundle install && rm -rf /devdocs/

WORKDIR /home/devuser/

EXPOSE 9292

# This entrypoint lets you
# docker-compose run --rm --service-ports devdocs
# straight into a bash shell
ENTRYPOINT [ "/bin/bash" ]

USER devuser