The timestamp at which the docker container was created can be known using:

docker inspect --format='{{.Created}}' 6de2e88f7859
2020-12-08T17:29:37.769047437Z

Similarly, the timestamp at which the kubernetes pod (to which this container belongs) was created can be known using:

kubectl describe pod <pod-name>
Name:         <pod-name>
Namespace:    default                                                                                                                                                                                                                          
Priority:     0                                                                                                                                                                                                                                
Node:         xyz.com/11.11.11.11
Start Time:   Tue, 08 Dec 2020 17:29:36 +0000

I want to add this pod/container creation timestamp (preferably pod creation timestamp - mentioned as Start Time: Tue, 08 Dec 2020 17:29:36 +0000 in the kubectl describe pod <pod-name> output) as one of the container labels available (.Config.Labels). Some default labels are: io.kubernetes.container.name, io.kubernetes.pod.name, annotation.io.kubernetes.container.hash, annotation.io.kubernetes.container.ports, etc. These labels can be seen using the following command:

docker inspect --format='{{json .Config.Labels}}' <container-id>

However, I couldn't find the pod/container creation time label here. Is there any way to add this pod/container creation timestamp as one of the labels?

I'm looking for a container label here as I want to add that to /etc/docker/daemon.json file.