anchor.diff:  WORKDIR $GOPATH/src/github.com/opencontainers/runc
   ARG TARGETPLATFORM
   RUN --mount=from=runc-src,src=/usr/src/runc,target=. --mount=target=/root/.cache,type=cache \
  -  CGO_ENABLED=1 go build -ldflags '-extldflags -static' -tags 'seccomp netgo cgo static_build osusergo' -o /usr/bin/runc ./ && \
  +  CGO_ENABLED=1 go build -mod=vendor -ldflags '-extldflags -static' -tags 'apparmor seccomp netgo cgo static_build osusergo' -o /usr/bin/runc ./ && \
     file /usr/bin/runc | grep "statically linked"
   
   FROM gobuild-base AS buildkit-base
  
positive.code: FROM gobuild-minimal AS gobuild-s390x-s390x
  FROM gobuild-minimal AS gobuild-ppc64le-ppc64le
  FROM gobuild-minimal AS gobuild-arm64-arm64
  FROM gobuild-cross-amd64 AS gobuild-amd64-arm
  FROM gobuild-cross-amd64 AS gobuild-amd64-s390x
  FROM gobuild-cross-amd64 AS gobuild-amd64-ppc64le
  FROM gobuild-cross-amd64 AS gobuild-amd64-arm64
  FROM gobuild-$BUILDARCH-$TARGETARCH AS gobuild-base
  
  # runc source
  
negative.code: FROM gobuild-minimal AS gobuild-cross-amd64
  RUN dpkg --add-architecture s390x && \
    dpkg --add-architecture ppc64el && \
    apt-get update && \
    apt-get --no-install-recommends install -y \
      gcc-s390x-linux-gnu libc6-dev-s390x-cross libseccomp-dev:s390x \
      crossbuild-essential-ppc64el libseccomp-dev:ppc64el \
      --no-install-recommends
    
  FROM gobuild-minimal AS gobuild-cross-amd64-arm
  RUN echo "deb http://deb.debian.org/debian buster-backports main" >> /etc/apt/sources.list
  RUN apt-get update && apt-get install --no-install-recommends -y libseccomp2=2.4.4-1~bpo10+1 libseccomp-dev=2.4.4-1~bpo10+1 
  RUN dpkg --add-architecture armel && \
    dpkg --add-architecture armhf && \
    dpkg --add-architecture arm64 && \
    apt-get update && \
    apt-get --no-install-recommends install -y \
      crossbuild-essential-armel libseccomp2:armel=2.4.4-1~bpo10+1 libseccomp-dev:armel=2.4.4-1~bpo10+1 \
      crossbuild-essential-armhf libseccomp2:armhf=2.4.4-1~bpo10+1 libseccomp-dev:armhf=2.4.4-1~bpo10+1 \
      crossbuild-essential-arm64 libseccomp2:arm64=2.4.4-1~bpo10+1 libseccomp-dev:arm64=2.4.4-1~bpo10+1 \
      --no-install-recommends
  
  # define all valid target configurations for compilation
  FROM gobuild-minimal AS gobuild-amd64-amd64
  