anchor.diff:  # Use 'docker build --target=<name> .' to build one.
   # e.g. `docker build --target=release-light .`
   #
  -# All non-dev targets have a VERSION argument that must be provided 
  -# via --build-arg=VERSION=<version> when building. 
  -# e.g. --build-arg VERSION=1.11.2
  +# All non-dev targets have a PRODUCT_VERSION argument that must be provided 
  +# via --build-arg=PRODUCT_VERSION=<version> when building. 
  +# e.g. --build-arg PRODUCT_VERSION=1.11.2
   #
   # For local dev and testing purposes, please build and use the `dev` docker image.
   #
  
positive.code: FROM docker.mirror.hashicorp.services/alpine:latest as official
  
  # This is the release of Packer to pull in.
  ARG VERSION
  
  LABEL name="Packer" \
        maintainer="HashiCorp Packer Team <packer@hashicorp.com>" \
        vendor="HashiCorp" \
        version=$VERSION \
        release=$VERSION \
        summary="Packer is a tool for creating identical machine images for multiple platforms from a single source configuration." \
        description="Packer is a tool for creating identical machine images for multiple platforms from a single source configuration. Please submit issues to https://github.com/hashicorp/packer/issues"
  
  
negative.code:         armhf) packerArch='arm' ;; \
          x86) packerArch='386' ;; \
          x86_64) packerArch='amd64' ;; \
          *) echo >&2 "error: unsupported architecture: ${apkArch} (see ${HASHICORP_RELEASES}/packer/${PRODUCT_VERSION}/)" && exit 1 ;; \
      esac && \
      wget ${HASHICORP_RELEASES}/packer/${PRODUCT_VERSION}/packer_${PRODUCT_VERSION}_linux_${packerArch}.zip && \
      wget ${HASHICORP_RELEASES}/packer/${PRODUCT_VERSION}/packer_${PRODUCT_VERSION}_SHA256SUMS && \
      wget ${HASHICORP_RELEASES}/packer/${PRODUCT_VERSION}/packer_${PRODUCT_VERSION}_SHA256SUMS.sig && \
      gpg --batch --verify packer_${PRODUCT_VERSION}_SHA256SUMS.sig packer_${PRODUCT_VERSION}_SHA256SUMS && \
      grep packer_${PRODUCT_VERSION}_linux_${packerArch}.zip packer_${PRODUCT_VERSION}_SHA256SUMS | sha256sum -c && \
      unzip -d /tmp/build packer_${PRODUCT_VERSION}_linux_${packerArch}.zip && \
      cp /tmp/build/packer /bin/packer && \
      cd /tmp && \
      rm -rf /tmp/build && \
  