Docker Deep Dive

Other Dockerfile instructions include LABEL, ENV, ONBUILD, HEALTHCHECK, CMD and more…

Run the following command from the shell of your Docker host to delete all containers.
$ docker container rm $(docker container ls -aq) -f

all of the container execution and container runtime code entirely removed from the daemon and refactored into small, specialized tools.

containers do not require their own full-blown OS. In fact, all containers on a single host share the host’s OS.