anchor.diff:  	    --ignore-installed requests --ignore-installed chardet \
   	    --ignore-installed urllib3 \
   	    --upgrade setuptools && \
  -    pip install --no-cache-dir -Iv conan==1.11.2
  +    pip install --no-cache-dir -Iv conan==1.11.2 && \
  +    conan config install https://github.com/conan-io/conanclientcert.git
  +
   
   # install NuGet (w. mono)
   # https://docs.microsoft.com/en-us/nuget/install-nuget-client-tools#macoslinux
  
positive.code: 
  COPY swift-all-keys.asc .
  RUN set -e; \
      SWIFT_WEBDIR="$SWIFT_WEBROOT/$SWIFT_BRANCH/$(echo $SWIFT_PLATFORM | tr -d .)/" \
      && SWIFT_BIN_URL="$SWIFT_WEBDIR/$SWIFT_VERSION/$SWIFT_VERSION-$SWIFT_PLATFORM.tar.gz" \
      && SWIFT_SIG_URL="$SWIFT_BIN_URL.sig" \
      # - Grab curl here so we cache better up above
  
negative.code: ARG SWIFT_PLATFORM=ubuntu18.04
  ARG SWIFT_BRANCH=swift-5.3.3-release
  ARG SWIFT_VERSION=swift-5.3.3-RELEASE
  ARG SWIFT_WEBROOT=https://download.swift.org
  
  ENV SWIFT_SIGNING_KEY=$SWIFT_SIGNING_KEY \
      SWIFT_PLATFORM=$SWIFT_PLATFORM \
  