Dockerfile from codeclimate-community/codeclimate-markdownlint

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FROM ruby:2.6.3-slim

ENV LANG C.UTF-8

WORKDIR /usr/src/app

COPY Gemfile /usr/src/app/
COPY Gemfile.lock /usr/src/app/

RUN apt-get update && \
    apt-get install -y build-essential git && \
    bundle && \
    apt-get remove -y build-essential

RUN adduser --uid 9000 --disabled-password --quiet --gecos "app" app
COPY . /usr/src/app
RUN chown -R app:app /usr/src/app

USER app

RUN bundle exec rake docs:scrape

VOLUME /code
WORKDIR /code

CMD ["/usr/src/app/bin/codeclimate-markdownlint"]