Dockerfile

FROM logstash:8.17.4

USER logstash
ENV PATH=/usr/share/logstash/vendor/jruby/bin:/usr/share/logstash/vendor/bundle/jruby/2.5.0/bin:/usr/share/logstash/jdk/bin:$PATH
ENV LOGSTASH_PATH=/usr/share/logstash
ENV GEM_PATH=/usr/share/logstash/vendor/bundle/jruby/2.5.0
ENV GEM_HOME=/usr/share/logstash/vendor/bundle/jruby/2.5.0

RUN gem install bundler:2.3.6

COPY --chown=logstash:logstash ./clients/cmd/logstash/ /home/logstash/
WORKDIR /home/logstash/

# don't run 'bundle update'. It causes a transitive dependency error
RUN bundle config set --local path /usr/share/logstash/vendor/bundle \
    && bundle install \
    && bundle exec rake vendor \
    && bundle exec rspec

RUN cat logstash-output-loki.gemspec | grep s.version | awk '{print $3}' | cut -d "'" -f 2 >VERSION

RUN gem build logstash-output-loki.gemspec && \
    PLUGIN_VERSION=$(cat VERSION); /usr/share/logstash/bin/logstash-plugin install logstash-output-loki-${PLUGIN_VERSION}.gem

EXPOSE 5044