instruction: Create a Dockerfile for Node.js with production best practices
output: ```dockerfile
  from the Kubernetes API when exactly that happens.Therefore, pods must be resilient against being started up with different network
  connectivity than expected. If you need to make sure the pod can reach certain destinations
  before being started, you can use an init container
  to wait for those destinations to be reachable before kubelet starts the app containers.Every NetworkPolicy will be applied to all selected pods eventually.
  Because the network plugin may implement NetworkPolicy in a distributed manner,
  it is possible that pods may see a slightly inconsistent view of network policies
  when the pod is first created, or when pods or policies change.
  For example, a newly-created pod that is supposed to be able to reach both Pod A
  on Node 1 and Pod B on Node 2 may find that it can reach Pod A immediately,
  but cannot reach Pod B until a few seconds later.NetworkPolicy and hostNetwork podsNetworkPolicy behaviour for hostNetwork pods is , but it should be limited to 2 possibilities:The network plugin can distinguish hostNetwork pod traffic
  ```