ci: remove dind service, use runner docker socket directly

.gitea/workflows/build-and-push.yml

@@ -10,25 +10,12 @@ on:
 jobs:
   build-and-push:
     runs-on: dind
-    services:
-      dind:
-        image: docker:dind
-        options: --privileged
     env:
-          DOCKER_TLS_CERTDIR: ""
-    env:
-      DOCKER_HOST: tcp://localhost:2375
+      DOCKER_HOST: unix:///var/run/docker.sock
 
     steps:
       - name: Install dependencies
-        run: apk add --no-cache git docker-cli
-
-      - name: Wait for Docker daemon
-        run: |
-          until docker info > /dev/null 2>&1; do
-            echo "Waiting for Docker daemon..."
-            sleep 2
-          done
+        run: apk add --no-cache git
 
       - name: Checkout
         run: |
@@ -51,6 +38,6 @@ jobs:
           REGISTRY="${REGISTRY#https://}"
           REGISTRY="${REGISTRY#http://}"
           IMAGE="$REGISTRY/${{ gitea.repository }}"
-          docker buildx build -t "$IMAGE:${{ gitea.sha }}" -t "$IMAGE:latest" .
+          docker build -t "$IMAGE:${{ gitea.sha }}" -t "$IMAGE:latest" .
           docker push "$IMAGE:${{ gitea.sha }}"
           docker push "$IMAGE:latest"