4.8 清除容器(prune)

执行docker container prune命令，会自动清除掉所有处于停止状态的容器。

$ docker ps -a
CONTAINER ID   IMAGE           COMMAND   CREATED          STATUS                     PORTS     NAMES
ff54c8b76403   ubuntu:latest   "bash"    28 minutes ago   Exited (0) 5 seconds ago             ubuntu-test

$ docker container prune
WARNING! This will remove all stopped containers.
Are you sure you want to continue? [y/N] y
Deleted Containers:
ff54c8b7640308b086b5fdd136ac6491a36bf1f3db096df848ac5d4d3ad8f302
Total reclaimed space: 0B

$ docker ps -a
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES