ci: fix runner to use node-labeled runner for Docker builds

.gitea/workflows/build-push.yml

@@ -7,21 +7,11 @@ on:
 
 jobs:
   build-push:
-    runs-on: golang
-    container:
-      image: docker:27-cli
-      volumes:
-        - /docker-certs/client:/docker-certs/client:ro
+    runs-on: node
     env:
-      DOCKER_HOST: tcp://localhost:2376
-      DOCKER_TLS_VERIFY: "1"
-      DOCKER_CERT_PATH: /docker-certs/client
       REGISTRY: forgejo.riotpiao.com
       IMAGE: forgejo.riotpiao.com/rock/poimen-workflows
     steps:
-      - name: Install git
-        run: apk add --no-cache git
-
       - name: Checkout code
         uses: actions/checkout@v4