chore(ci): add permissions to release workflow (#159)

Closes #158.

Author: williamboman

.github/workflows/docker-image-push.yml

@@ -12,6 +12,10 @@ on:
         description: Which tag to rebuild and push.
         required: true
 
+permissions:
+  contents: read
+  packages: write
+
 jobs:
   build:
     name: Build