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FROM ruby:2.7-alpine
ENV APP_HOME /app
# git is required by bundler to run jaeger gem with local path
RUN apk add --no-cache git
# Add only files needed for installing gem dependencies. This allows us to
# change other files without needing to install gems every time when building
# the docker image.
ADD Gemfile Gemfile.lock jaeger-client.gemspec $APP_HOME/
ADD lib/jaeger/client/version.rb $APP_HOME/lib/jaeger/client/
ADD crossdock/Gemfile crossdock/Gemfile.lock $APP_HOME/crossdock/
RUN gem install bundler -v $(tail -n 1 $APP_HOME/Gemfile.lock | awk '{$1=$1};1')
RUN apk add --no-cache --virtual .app-builddeps build-base \
&& cd $APP_HOME && bundle install \
&& cd $APP_HOME/crossdock && bundle install \
&& apk del .app-builddeps
ADD . $APP_HOME
RUN chown -R nobody:nogroup $APP_HOME
USER nobody
WORKDIR $APP_HOME/crossdock
CMD ["bundle", "exec", "./server"]
EXPOSE 8080-8082
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