use valid pseudo-version

      if [ -n "$CI_COMMIT_TAG" ]; then

        VERSION="${CI_COMMIT_TAG#v}"   # strip leading v

      else

        VERSION="dev-${CI_COMMIT_SHORT_SHA}"

        VERSION="0.0.dev0+g${CI_COMMIT_SHORT_SHA}"

      fi

    - docker build --build-arg PSEUDO_VERSION=$VERSION --target $TARGET -t $IMAGE:$VARIANT -t $IMAGE:${VERSION}-${VARIANT} .

    - echo docker push $IMAGE:$VARIANT