Update docker workflow

.github/workflows/docker.yml

@@ -4,13 +4,34 @@ on:
   release:
     types:
       - released
-
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: "The tag version you want to build"
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
+      - name: Get commit to build
+        id: ref
+        run: |
+          if [[ -z "${{ github.event.inputs.tag }}" ]]; then
+            ref=${{ github.ref_name }}
+          else
+            ref=${{ github.event.inputs.tag }}
+          fi
+          if [[ $ref == *"-"* ]]; then
+            tags=ghcr.io/sagernet/sing-box:latest-beta
+          else
+            tags=ghcr.io/sagernet/sing-box:latest
+          fi
+          tags="$tags\nghcr.io/sagernet/sing-box:$ref"
+          echo "::set-output name=ref::$ref"
+          echo "::set-output name=tags::$tags"
       - name: Checkout
         uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4
+        with:
+          ref: ${{ steps.ref.outputs.ref }}
       - name: Setup Docker Buildx
         uses: docker/setup-buildx-action@v3
       - name: Setup QEMU for Docker Buildx
@@ -33,7 +54,5 @@ jobs:
           target: dist
           build-args: |
             BUILDKIT_CONTEXT_KEEP_GIT_DIR=1
-          tags: |
-            ghcr.io/sagernet/sing-box:latest
-            ghcr.io/sagernet/sing-box:${{ github.ref_name }}
+          tags: ${{ steps.ref.outputs.tags }}
           push: true