fix(ci): use host networking and custom DNS for DinD builds

DinD containers can't reach external services due to DNS/networking
issues. Fix by:
- Passing --dns 10.43.0.10 (CoreDNS) and --dns 223.5.5.5 (Alibaba)
  to DinD daemon
- Using --network host for docker build to use pod networking

Co-Authored-By: Claude <noreply@anthropic.com>

.gitlab-ci.yml

@@ -14,7 +14,8 @@ variables:
 .build-template: &build-template
   image: docker:27
   services:
-    - docker:27-dind
+    - name: docker:27-dind
+      command: ["--dns", "10.43.0.10", "--dns", "223.5.5.5"]
   retry: 2
   before_script:
     - until docker info >/dev/null 2>&1; do echo "Waiting for Docker daemon..."; sleep 2; done
@@ -26,7 +27,7 @@ variables:
       else
         TAG="main-${CI_COMMIT_SHORT_SHA}"
       fi
-    - docker build -t $HARBOR_REGISTRY/$HARBOR_PROJECT/$IMAGE_NAME:$TAG -f $DOCKERFILE_PATH .
+    - docker build --network host -t $HARBOR_REGISTRY/$HARBOR_PROJECT/$IMAGE_NAME:$TAG -f $DOCKERFILE_PATH .
     - docker push $HARBOR_REGISTRY/$HARBOR_PROJECT/$IMAGE_NAME:$TAG
   rules:
     - if: $CI_COMMIT_BRANCH == "main"