Step three in creating local releases. (istio#15074)

* Local build

* Local build

* Fix shell

* Add docker_tag

* Fix lint

* Removing some dups

* License

* License

* License

* Push images to docker hub

release/gcb/docker_tag_push_lib.sh

@@ -124,7 +124,10 @@ function docker_push_images() {
   local OUT_PATH
   OUT_PATH="$3"
   echo "pushing to ${DST_HUB}/image:${DST_TAG}"
-  add_docker_creds "${DST_HUB}"
+
+  if [ -z "${LOCAL_BUILD+x}" ]; then
+    add_docker_creds "${DST_HUB}"
+  fi
 
   for TAR_PATH in "${OUT_PATH}"/docker/*.tar.gz; do
     BASE_NAME=$(basename "$TAR_PATH")

release/gcb/local.sh

@@ -6,8 +6,16 @@ set -o errexit
 source gcb_lib.sh
 ROOT=$(cd "$(git rev-parse --show-cdup)" && pwd || return)
 artifacts="$HOME/output/local"
-export NEW_VERSION="fake"
-export DOCKER_HUB='docker.io/fake'
+export NEW_VERSION=${TAG:-}
+export DOCKER_HUB=${DOCKER_HUB:-}
+if [ -z "${NEW_VERSION}" ]; then
+   echo "Provide or export the tag for the images. TAG=my_amazing_tag."
+   exit 1
+fi
+if [ -z "${DOCKER_HUB}" ]; then
+   echo "Provide or export the docker hub. DOCKER_HUB=docker.io/my_awesome_hub."
+   exit 1
+fi
 GOPATH=$(cd "$ROOT/../../.." && pwd)
 LOCAL_BUILD=true
 export LOCAL_BUILD
@@ -18,7 +26,6 @@ CURRENT_BRANCH=$(git symbolic-ref --short HEAD)
 BRANCH=${BRANCH:-$CURRENT_BRANCH}
 export BRANCH
 export CB_VERIFY_CONSISTENCY=true
-
 echo "Delete old builds"
 rm -r "${artifacts}" || echo
 mkdir -p "${artifacts}"
@@ -33,3 +40,5 @@ pushd "${ROOT}" || exit
   make_istio "${artifacts}" "${DOCKER_HUB}" "${DOCKER_HUB}" "${NEW_VERSION}" "${BRANCH}"
 popd || return
 
+docker_tag_images  "${DOCKER_HUB}" "${NEW_VERSION}" "${artifacts}"
+docker_push_images "${DOCKER_HUB}" "${NEW_VERSION}" "${artifacts}"