diff --git a/.github/workflows/main.yml b/.github/workflows/build.yml
similarity index 70%
rename from .github/workflows/main.yml
rename to .github/workflows/build.yml
index 072ae23..b0f90bc 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/build.yml
@@ -12,6 +12,10 @@ on:
   pull_request:
     types:
       - opened
+    paths:
+      - "**/*.go"
+      - "go.mod"
+      - "go.sum"
 
 permissions: write-all
 
@@ -125,47 +129,3 @@ jobs:
           GITHUB_TOKEN: ${{ github.token }}
         run: |
           gh release upload ${{ github.event.release.tag_name }} zju-connect-${{ steps.get_filename.outputs.ASSET_NAME }}.zip
-
-
-      # https://github.com/docker/setup-qemu-action
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
-
-      # https://github.com/docker/setup-buildx-action
-      - name: Set up Docker Buildx
-        id: buildx
-        uses: docker/setup-buildx-action@v2
-
-      # https://github.com/docker/login-action
-      - name: Login to DockerHub
-        uses: docker/login-action@v2
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-
-      # https://github.com/docker/metadata-action
-      - name: Docker meta
-        id: meta
-        uses: docker/metadata-action@v3
-        with:
-          images: |
-            mythologyli/zju-connect
-          tags: |
-            type=schedule
-            type=ref,event=branch
-            type=ref,event=pr
-            type=semver,pattern={{version}}
-            type=semver,pattern={{major}}.{{minor}}
-            type=semver,pattern={{major}}
-            type=sha
-            type=raw,value=latest
-            
-      # https://github.com/docker/build-push-action
-      - name: Build and push
-        uses: docker/build-push-action@v3
-        with:
-          context: .
-          platforms: linux/amd64,linux/arm64
-          push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
new file mode 100644
index 0000000..23f5577
--- /dev/null
+++ b/.github/workflows/docker.yml
@@ -0,0 +1,61 @@
+name: Publish Docker image
+
+on:
+  release:
+    types: [ published ]
+  push:
+    paths:
+      - "**/*.go"
+      - "go.mod"
+      - "go.sum"
+      - ".github/workflows/*.yml"
+
+permissions: write-all
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout codebase
+        uses: actions/checkout@v3
+
+      # https://github.com/docker/setup-qemu-action
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      # https://github.com/docker/setup-buildx-action
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v2
+
+      # https://github.com/docker/login-action
+      - name: Login to DockerHub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      # https://github.com/docker/metadata-action
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: |
+            mythologyli/zju-connect
+          tags: |
+            type=schedule
+            type=ref,event=branch
+            type=semver,pattern={{version}},enable=${{ github.event_name == 'release' }}
+            type=sha
+            type=raw,value=latest,enable=${{ github.event_name == 'release' }}
+
+      # https://github.com/docker/build-push-action
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}