ci: automate release publishing

.github/workflows/docker-publish.yml

@@ -3,6 +3,17 @@ name: Publish Docker image
 on:
   push:
     tags: ['v*', 'MediaStationGo-v*']
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Image tag to publish, for example MediaStationGo-v0.0.32'
+        required: true
+        type: string
+      ref:
+        description: 'Git ref to build from'
+        required: false
+        default: main
+        type: string
 
 permissions:
   contents: read
@@ -11,8 +22,12 @@ permissions:
 jobs:
   docker:
     runs-on: ubuntu-latest
+    env:
+      RELEASE_VERSION: ${{ github.event_name == 'workflow_dispatch' && inputs.version || github.ref_name }}
     steps:
       - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event_name == 'workflow_dispatch' && inputs.ref || github.ref }}
 
       - uses: docker/setup-qemu-action@v3
       - uses: docker/setup-buildx-action@v3
@@ -31,7 +46,7 @@ jobs:
           images: ghcr.io/shukebta/mediastation-go
           tags: |
             type=raw,value=latest
-            type=ref,event=tag
+            type=raw,value=${{ env.RELEASE_VERSION }}
 
       - name: Build & push
         uses: docker/build-push-action@v6