Add ability to publish containers on demand

Signed-off-by: Frank Hinek <[email protected]>

.github/workflows/publish-container.yml

@@ -5,6 +5,12 @@ name: Publish Container Image
 on:
   release:
     types: [released]
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Tag for the image'
+        required: true
+        default: 'alpha'
 
 env:
   REGISTRY: ghcr.io
@@ -36,6 +42,7 @@ jobs:
         tags: |
           type=semver,pattern={{version}}
           type=semver,pattern={{major}}.{{minor}}
+          type=raw,value=${{ github.event.inputs.tag }},enable=${{ github.event_name == 'workflow_dispatch' }}
 
     - name: Build and push Docker image
       uses: docker/build-push-action@15560696de535e4014efeff63c48f16952e52dd1 # v6.2.0