Docker续1：docker使用

一、打包传输

1.打包

[root@localhost ~]# systemctl start docker
[root@localhost ~]# docker save -o centos.tar centos:latest 
[root@localhost ~]# ls
anaconda-ks.cfg  centos.tar

2.传输

[root@localhost ~]# scp centos.tar root@192.168.1.100:/root

3.删除镜像

[root@localhost ~]# docker images
REPOSITORY   TAG       IMAGE ID       CREATED       SIZE
centos       latest    5d0da3dc9764   2 years ago   231MB
[root@localhost ~]# docker start c0                   //启动容器
c0
[root@localhost ~]# docker attach c0                     //进入容器
[root@207ca7680ecc /]# exit
exit
[root@localhost ~]# docker ps
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
[root@localhost ~]# docker ps --all                         //查看全部
CONTAINER ID   IMAGE           COMMAND       CREATED        STATUS                     PORTS     NAMES
207ca7680ecc   centos:latest   "/bin/bash"   20 hours ago   Exited (0) 4 seconds ago             c0
[root@localhost ~]# docker rmi centos:latest                               //这里看到没有删掉，因为有容器正在使用
Error response from daemon: conflict: unable to remove repository reference "centos:latest" (must force) - container 207ca7680ecc is using its referenced image 5d0da3dc9764
[root@localhost ~]# docker rm c0                                  //删除容器
c0
[root@localhost ~]# docker ps --all
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
[root@localhost ~]# docker rmi centos:latest                                   //成功删除
Untagged: centos:latest
Untagged: centos@sha256:a27fd8080b517143cbbbab9dfb7c8571c40d67d534bbdee55bd6c473f432b177
Deleted: sha256:5d0da3dc976460b72c77d94c8a1ad043720b0416bfc16c52c45d4847e53fadb6
Deleted: sha256:74ddd0ec08fa43d09f32636ba91a0a3053b02cb4627c35051aff89f853606b59
[root@local