2023
https://www.baeldung.com/ops/kubertenes-pod-vs-container
    ! pod can have multiple containers
2022
https://kubesimplify.com/pods-in-kubernetes
2021
https://itnext.io/kubernetes-for-dummies-life-of-a-pod-fc8158e27aa
2018
https://medium.com/@dominik.tornow/what-the-hell-is-a-pod-anyways-72e5534b892c
    https://habr.com/company/flant/blog/427819/