etc: add bazel option for DockerTag

Signed-off-by: Vitor Bandeira <[email protected]>

Author: vvbandeira

etc/DockerTag.sh

@@ -13,6 +13,11 @@ if [[ "$@" == "-dev" ]]; then
         "./etc/DockerTag.sh"
     )
     cat "${file_list[@]}" | sha256sum | awk '{print substr($1, 1, 6)}'
+elif [[ "$@" == "-bazel" ]]; then
+    file_list=(
+        "./bazel/Dockerfile"
+    )
+    cat "${file_list[@]}" | sha256sum | awk '{print substr($1, 1, 6)}'
 elif [[ "$@" == "-master" ]]; then
     git describe
 else