anchor.diff:  ENV SWIFT_HOME "/opt/swift"
   ENV PATH "${PATH}:${SWIFT_HOME}/usr/bin"
   RUN mkdir -p /opt/swift && \
  -    curl -L https://swift.org/builds/swift-4.2.1-release/ubuntu1404/swift-4.2.1-RELEASE/swift-4.2.1-RELEASE-ubuntu14.04.tar.gz | \
  +    curl -L https://swift.org/builds/swift-5.0.1-release/ubuntu1404/swift-5.0.1-RELEASE/swift-5.0.1-RELEASE-ubuntu14.04.tar.gz | \
       tar xz -C /opt/swift --strip 1
   
   USER bazel
  
positive.code: ENV SWIFT_HOME "/opt/swift"
  ENV PATH "${PATH}:${SWIFT_HOME}/usr/bin"
  RUN mkdir -p /opt/swift && \
      curl -L https://swift.org/builds/swift-4.2.1-release/ubuntu1604/swift-4.2.1-RELEASE/swift-4.2.1-RELEASE-ubuntu16.04.tar.gz | \
      tar xz -C /opt/swift --strip 1
  
  USER bazel
  
negative.code: ENV SWIFT_HOME "/opt/swift"
  ENV PATH "${PATH}:${SWIFT_HOME}/usr/bin"
  RUN mkdir -p /opt/swift && \
      curl -L https://swift.org/builds/swift-5.0.1-release/ubuntu1804/swift-5.0.1-RELEASE/swift-5.0.1-RELEASE-ubuntu18.04.tar.gz | \
      tar xz -C /opt/swift --strip 1
  
  USER bazel
  RUN gcloud auth configure-docker --quiet
  RUN bazel version
  
  FROM ubuntu1804-nojava AS ubuntu1804-java11
  USER root
  