avoid using cache during build because branches

Docker/build.sh

@@ -7,7 +7,7 @@ git diff $tag
 hash=$(git rev-parse --short HEAD)
 echo building rGIT${hash}
 sleep 1
-docker build "$@" --build-arg BORT=${tag} . -f shellb3-cspp-py38.Dockerfile \
+docker build "$@" --no-cache --build-arg BORT=${tag} . -f shellb3-cspp-py38.Dockerfile \
   -t shellb3-cspp-py38:latest \
   -t gitlab.ssec.wisc.edu:5555/cspp/buildbucket/shellb3/shellb3-centos7-gcc10-cspp-py38:rGIT${hash} \
   -t gitlab.ssec.wisc.edu:5555/cspp/buildbucket/shellb3/shellb3-centos7-gcc10-cspp-py38:latest