Difference between `docker stop` and `docker kill`

docker stop
Stop a running container by sending SIGTERM and then SIGKILL after a grace period

The main process inside the container will receive SIGTERM, and after a grace period, SIGKILL.

docker kill
Kill a running container using SIGKILL or a specified signal

The main process inside the container will be sent SIGKILL, or any signal specified with option --signal.

See also
SIGTERM vs. SIGKILL