Docker 基于已有镜像的容器创建镜像

Docker 基于已有镜像的容器创建镜像:

docker:/root# docker run -it januswel/centos  /bin/bash

docker exec -it januswel/centos  /bin/bash

docker:/root# docker start 13fe7a3f05cc
13fe7a3f05cc

后台运行:
docker:/root# docker exec -it 13fe7a3f05cc /bin//bash
[root@13fe7a3f05cc /]# 

docker:/root# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
13fe7a3f05cc        januswel/centos     "/bin/bash"         3 hours ago         Up About a minute                       boring_torvalds 

查看容器版本:

[root@13fe7a3f05cc /]# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)

[root@13fe7a3f05cc /]# ifconfig -a
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.17.0.2  netmask 255.255.0.0  broadcast 0.0.0.0
        inet6 fe80::42:acff:fe11:2  prefixlen 64  scopeid 0x20<link>
        ether 02:42:ac:11:00:02  txqueuelen 0  (Ethernet)
        RX packets 7115  bytes 10516479 (10.0 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 3546  bytes 236182 (230.6 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 16436
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 0  (Local Loopback)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@13fe7a3f05cc /]# ping 192.168.32.101
PING 192.168.32.101 (192.168.32.101) 56(84) bytes of data.
64 bytes from 192.168.32.101: icmp_seq=1 ttl=63 time=3.00 ms
64 bytes from 192.168.32.101: icmp_seq=2 ttl=63 time=0.359 ms

保存更改的镜像:

docker:/root# docker commit -m "centos_with_nettools_and_wget" -a "scan" 13fe7a3f05cc  centos_with_net:scan
92b2e7f857ae6b84c6b2484ece2ad7e3f4e35137a2210a0e5944906099c12e67
docker:/root# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
centos_with_net     scan                92b2e7f857ae        8 seconds ago       269.5 MB
januswel/centos     latest              088820de4929        12 days ago         198.3 MB
linux123            xxx123              088820de4929        12 days ago         198.3 MB
linux123            jj                  088820de4929        12 days ago         198.3 MB
linux123            latest              088820de4929        12 days ago         198.3 MB