fix variables

docker-build-push/build.sh

@@ -31,6 +31,8 @@ case "${INPUT_IMAGE_NAME}" in
 esac
 
 workdir="${PWD}/repo"
+sha_tag="${INPUT_GIT_SHA}"
+latest_tag="latest"
 local_image="localbuild:${INPUT_IMAGE_TAG}"
 remote_image="${INPUT_REGISTRY}/${INPUT_IMAGE_NAME}:${INPUT_IMAGE_TAG}"
 remote_image_sha="${INPUT_REGISTRY}/${INPUT_IMAGE_NAME}:${sha_tag}"