1、查看容器
[root@localhost ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES cd6957191c52 nginx "nginx -g 'daemon ..." 8 hours ago Up 7 hours 192.168.51.227:9999->80/tcp webserver
2、使用容器名字webserver进行文件复制
3、从宿主机复制到容器，命令：docker cp ceshi.txt webserver:/home/
4、进入容器，查看文件：docker exec -it webserver bash
[root@localhost docker]# docker exec -it webserver bash root@cd6957191c52:/# cat /home/ceshi.txt hello,bob! nice to meet you! hello jack! nice to meet you too!
5、修改容器中的文件，并复制到宿主机，命令：docker cp webserver:/home/ceshi.txt ./
root@cd6957191c52:/# cd /home/ root@cd6957191c52:/home# echo "this is my bike" >> ceshi.txt root@cd6957191c52:/home# cat ceshi.txt hello,bob! nice to meet you! hello jack! nice to meet you too! this is my bike root@cd6957191c52:/home# exit exit [root@localhost docker]# docker cp webserver:/home/ceshi.txt ./ [root@localhost docker]# cat ceshi.txt hello,bob! nice to meet you! hello jack! nice to meet you too! this is my bike
或者，把容器的名字改为容器的ID，获取容器ID的方法：
方法1、
[root@localhost docker]# docker inspect -f '{{.Id}}' webserver cd6957191c52b25d29319b8ad450313931f2a8c730e4f1052704be957f8c573d
方法2、
[root@localhost docker]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES cd6957191c52 nginx "nginx -g 'daemon ..." 8 hours ago Up 7 hours 192.168.51.227:9999->80/tcp webserver [root@localhost docker]# docker inspect -f '{{.Id}}' cd6957191c52 cd6957191c52b25d29319b8ad450313931f2a8c730e4f1052704be957f8c573d
用容器ID复制，如下：
[root@localhost docker]# docker inspect -f '{{.Id}}' webserver cd6957191c52b25d29319b8ad450313931f2a8c730e4f1052704be957f8c573d [root@localhost docker]# echo "abc">>ceshi.txt [root@localhost docker]# cat ceshi.txt hello,bob! nice to meet you! hello jack! nice to meet you too! this is my bike abc [root@localhost docker]# docker cp ceshi.txt cd6957191c52b25d29319b8ad450313931f2a8c730e4f1052704be957f8c573d:/home/ [root@localhost docker]# docker exec -it webserver bash root@cd6957191c52:/# cd /home/ root@cd6957191c52:/home# cat ceshi.txt hello,bob! nice to meet you! hello jack! nice to meet you too! this is my bike abc
不用容器全ID也可以
[root@localhost docker]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES cd6957191c52 nginx "nginx -g 'daemon ..." 8 hours ago Up 7 hours 192.168.51.227:9999->80/tcp webserver [root@localhost docker]# docker cp cd6957191c52:/home/ceshi.txt ./abc.txt [root@localhost docker]# cat abc.txt hello,bob! nice to meet you! hello jack! nice to meet you too! this is my bike abc