chore: only generate docker images on demand (#1134)

* chore: only generate docker images on demand

* chore: consistent naming

.github/workflows/docker.yml

@@ -1,12 +1,9 @@
-name: Create and publish a Docker image
+name: docker
 
 on:
   release:
     types: [ published ]
-  push:
-    branches:
-      - main
-  pull_request:
+  workflow_dispatch:
 
 env:
   REGISTRY: ghcr.io
@@ -44,4 +41,4 @@ jobs:
           context: .
           push: true
           tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          labels: ${{ steps.meta.outputs.labels }}