Bundle install with concurrency

Author: samdev-7

Dockerfile

@@ -35,7 +35,7 @@ RUN apt-get update -qq && \
 
 # Install application gems
 COPY Gemfile Gemfile.lock ./
-RUN bundle install && \
+RUN bundle install --jobs=4 --retry=3 && \
     rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git && \
     bundle exec bootsnap precompile --gemfile