Dnsconfig does not take effect in Agent pod

[shuangkun]

Pre-requisites

• I have double-checked my configuration
• I can confirm the issue exists when I tested with :latest
• I have searched existing issues and could not find a match for this bug
• I'd like to contribute the fix myself (see contributing guide)

What happened/what did you expect to happen?

I want to use a local dnsserver in Http template to report some info.
But dnsconfig does not take effect, the domain name cannot be resolved and the network is blocked.

what i want

I want the agent pod also use workfow dnsConfig.

Version

latest

Paste a small workflow that reproduces the issue. We must be able to run the workflow; don't enter a workflows that uses private images.

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: http-template-
spec:
  entrypoint: main
  dnsPolicy: "None"
  dnsConfig:
    nameservers:
      - 100.32.2.5
      - 100.33.3.5
  templates:
    - name: main
      steps:
        - - name: get-google-homepage
            template: http
            arguments:
              parameters: [{name: url, value: "https://www.google.com"}]
    - name: http
      inputs:
        parameters:
          - name: url
      http:
        timeoutSeconds: 20 # Default 30
        url: "{{inputs.parameters.url}}"
        method: "GET" # Default GET
        headers:
          - name: "x-header-name"
            value: "test-value"
        # Template will succeed if evaluated to true, otherwise will fail
        # Available variables:
        #  request.body: string, the request body
        #  request.headers: map[string][]string, the request headers
        #  response.url: string, the request url
        #  response.method: string, the request method
        #  response.statusCode: int, the response status code
        #  response.body: string, the response body
        #  response.headers: map[string][]string, the response headers
        successCondition: "response.body contains \"google\"" # available since v3.3
        body: "test body" # Change request body

Logs from the workflow controller

kubectl logs -n argo deploy/workflow-controller | grep ${workflow}

Logs from in your workflow's wait container

kubectl logs -n argo -c wait -l workflows.argoproj.io/workflow=${workflow},workflow.argoproj.io/phase!=Succeeded