https://github.com/rophy/containers/blob/61bffffa349a5a3bafd001d4850197b009c89e09/jupyterhub-singleuser/Dockerfile#L1 https://github.com/raesene/alpine-containertools#container-tools https://github.com/lightrun-platform/koolkits#-available-koolkits- https://github.com/digitalocean/doks-debug#usage https://github.com/arunvelsriram/utils/blob/master/Dockerfile#L8 refs: https://martinheinz.dev/blog/104
