Merge pull request #412 from tangming1996/main

update doc

examples/joint_inference/helmet_detection_inference/README.md

@@ -111,6 +111,7 @@ spec:
     template:
       spec:
         nodeName: $EDGE_NODE
+        dnsPolicy: ClusterFirstWithHostNet
         containers:
         - image: kubeedge/sedna-example-joint-inference-helmet-detection-little:v0.3.0
           imagePullPolicy: IfNotPresent
@@ -148,6 +149,7 @@ spec:
     template:
       spec:
         nodeName: $CLOUD_NODE
+        dnsPolicy: ClusterFirstWithHostNet
         containers:
           - image: kubeedge/sedna-example-joint-inference-helmet-detection-big:v0.3.0
             name:  big-model