feat: add release build CI

.github/workflows/release.yml

@@ -0,0 +1,45 @@
+name: Release build
+
+on:
+  release:
+    types:
+    - published
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+    - name: Docker metadata
+      id: metadata
+      uses: docker/metadata-action@v5
+      with:
+        images: |
+          ghcr.io/qingdaou/oj-judge
+        tags: |
+          type=semver,pattern={{version}}
+          type=semver,pattern={{major}}.{{minor}}
+          type=semver,pattern={{major}},enable=${{ !startsWith(github.ref, 'refs/tags/v0.') }}
+
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Build and push
+      uses: docker/build-push-action@v5
+      with:
+        push: true
+        platforms: linux/amd64,linux/arm64
+        tags: ${{ steps.metadata.outputs.tags }}
+        annotations: ${{ steps.metadata.outputs.annotations }}

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "Judger"]
 	path = Judger
-	url = git@github.com:QingdaoU/Judger.git
+	url = https://github.com/QingdaoU/Judger.git