anchor.diff:  ENV PATH=$PATH:$GOPATH/bin
   
   RUN mkdir /gopath && \
  -  go install github.com/tools/godep@latest && \
  -  go install github.com/FiloSottile/gvt@latest && \
  -  go install github.com/kardianos/govendor@latest && \
  -  go clean -cache
  +    go install github.com/tools/godep@latest && \
  +    go install github.com/FiloSottile/gvt@latest && \
  +    go install github.com/kardianos/govendor@latest && \
  +    go clean -cache
   
   #install rvm and glide and godep
   RUN apt-add-repository -y ppa:rael-gc/rvm && \
  
positive.code: # install NuGet (w. mono)
  # https://docs.microsoft.com/en-us/nuget/install-nuget-client-tools#macoslinux
  RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF &&\
    echo "deb https://download.mono-project.com/repo/ubuntu stable-bionic main" | sudo tee /etc/apt/sources.list.d/mono-official-stable.list &&\
    apt-get update &&\
    apt-get install -y mono-complete &&\
    curl -o "/usr/local/bin/nuget.exe" "https://dist.nuget.org/win-x86-commandline/latest/nuget.exe" &&\
    curl -o "/usr/local/bin/nugetv3.5.0.exe" "https://dist.nuget.org/win-x86-commandline/v3.5.0/nuget.exe"
  
  # install dotnet core
  RUN wget -q https://packages.microsoft.com/config/ubuntu/18.04/packages-microsoft-prod.deb &&\
    sudo dpkg -i packages-microsoft-prod.deb &&\
    rm packages-microsoft-prod.deb &&\
    sudo apt-get update &&\
    sudo apt-get install -y dotnet-runtime-2.1 dotnet-sdk-2.1 dotnet-sdk-2.2 dotnet-sdk-3.0 dotnet-sdk-3.1
  
  # install Composer
  # The ARG and ENV are for installing tzdata which is part of this installaion.
  
negative.code: # See https://docs.conda.io/en/latest/miniconda_hashes.html
  # for latest versions and SHAs.
  RUN  \
      conda_installer=Miniconda3-py38_4.9.2-Linux-x86_64.sh &&\
      ref='1314b90489f154602fd794accfc90446111514a5a72fe1f71ab83e07de9504a7' &&\
      wget -q https://repo.anaconda.com/miniconda/${conda_installer} &&\
      sha=`openssl sha256 "${conda_installer}" | cut -d' ' -f2` &&\
      ([ "$sha" = "${ref}" ] || (echo "Verification failed: ${sha} != ${ref}"; false)) &&\
      (echo; echo "yes") | sh "${conda_installer}"
  
  # install Swift Package Manager
  # Based on https://github.com/apple/swift-docker/blob/main/5.3/ubuntu/18.04/Dockerfile
  