👷 add release workflow

.github/workflows/build.yml

@@ -37,7 +37,7 @@ jobs:
         with:
           context: .
           file: ./docker/flowg.dockerfile
-          tags: " linksociety/flowg:latest"
+          tags: "linksociety/flowg:latest"
           push: false
           load: true
           cache-from: type=local,src=/tmp/.buildx-cache

.github/workflows/release.yml

@@ -0,0 +1,45 @@
+---
+name: release
+
+on:
+  release:
+    types:
+      - published
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: checkout@scm
+        uses: actions/checkout@v4
+
+      - name: setup@docker
+        uses: docker/setup-buildx-action@v3
+
+      - name: login@docker
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+
+      - name: cache@docker
+        uses: actions/cache@v4
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-
+
+      - name: build@docker
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./docker/flowg.dockerfile
+          tags: |
+            linksociety/flowg:latest
+            linksociety/flowg:${{ github.event.release.tag_name }}
+          push: true
+          load: true
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache