root@localhost:/var/lib/docker# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
++81baec32cad4++ fbubuntu:20.04 "/bin/bash" 4 days ago Up 46 hours root_fbubuntu_lsdk2108_0c1bc7
bb30c257f8a8 fbubuntu:20.04 "/bin/bash" 5 days ago Exited (2) 2 days ago ricky_fbubuntu_lsdk2108_0c1bc7
docker commit -a hanzhiguang -m "lsdk21.08_ls1046ardb" ++81baec32cad4++ lsdk2108:ls1046
docker save -o lsdk2108_ls1046.tar lsdk2108:ls1046
或者直接生成压缩包：
docker save lsdk2108:ls1046 | gzip > lsdk2108_ls1046.tar.gz