// For more information See https://github.com/kubernetes/kubernetes/issues/108255.
  // Cannot be updated.
  // +optional
  // +patchMergeKey=containerPort
  // +patchStrategy=merge
  // +listType=map
  // +listMapKey=containerPort
  // +listMapKey=protocol
  repeated ContainerPort ports = 6;

  // List of sources to populate environment variables in the container.

  - A `create` or `update` API request with duplicate items in a keyed list no longer wipes out managedFields. Examples include env var entries with the same name, or port entries with the same containerPort in a pod spec.
  - A server-side apply request that makes unrelated changes to an object which has duplicate items in a keyed list no longer fails, and leaves the existing duplicate items as-is.

- Port mapping now allows the same `containerPort` of different containers to different `hostPort` without naming the mapping explicitly. ([#94494](https://github.com/kubernetes/kubernetes/pull/94494), [@SergeyKanzhelev](https://github.com/SergeyKanzhelev))