🔒️(CI) add permissions level on workflow

We add permissions level on workflow to avoid
warning in github action logs.
This is a warning and not an error,
but it is good to have a clean log without warnings.

.github/workflows/docker-publish.yml

@@ -37,6 +37,9 @@ description: Build and push a container image based on the input arguments provi
         default: ""
         description: "Build arg name to pass first amd64 tag to arm64 build (skips arch-independent build steps)"
 
+permissions:
+  contents: read
+
 jobs:
   build-and-push:
     runs-on: ubuntu-latest