Change the mount without root permission

[hixichen]

In templates/blockchain-utils.yaml file:

• name: dockersocket
  hostPath:
  path: /var/run/docker.sock

It required the pod has root permission.
In case of pod does not has root permission, deployment will fail.

Error: release network failed: pods "network-ibm-blockchain-network-utils" is forbidden: AdmissionController validation failed: [spec.volumes[1].hostPath.pathPrefix: Invalid value: "/var/run/docker.sock": is not allowed to be used]