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Docker教程
文章摘要
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启动容器
docker run <>
–name=<> #指定本容器名称
-d #后台运行本容器并返回容器ID，同时启动守护式容器
-i #以交互模式运行容器，通常与-t同时使用
-t #为容器重新分配一个伪输入中断，通常与-i同时使用
-p <宿主机端口>:<容器端口> #指定端口映射
-P #随机端口映射
root@user1-U1:~# docker run -d --name nginx1 -it -p 9090:80 nginx:latest
2f1f179cdfd83339a4ccafc95109df2a69c0abfad2da59a9cb1727566dc62330
root@user1-U1:~# netstat -tunlp | grep 9090
tcp 0 0 0.0.0.0:9090 0.0.0.0:* LISTEN 27164/docker-proxy
tcp6 0 0 :::9090 :::* LISTEN 27172/docker-proxy
容器导入导出镜像
[root@localhost ~]# docker run -d -it --name vmc1 centos:8
35957d6510c27099179628d47e07df106476bbd925be3bd334a8eaf03fa00f4a
[root@localhost ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
35957d6510c2 centos:8 "/bin/bash" 4 seconds ago Up 3 seconds vmc1
[root@localhost ~]# docker export 35957d6510c2 > ~/vmc1.tar
[root@localhost ~]# ll -a | grep vmc1
-rw-r--r--. 1 root root 238571520 Aug 8 15:49 vmc1.tar
[root@localhost ~]# docker kill vmc1
vmc1
[root@localhost ~]# docker rm -f vmc1
vmc1
[root@localhost ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@localhost ~]# docker import - vm1 < ~/vmc1.tar
sha256:c684bc6e5a38513e712200480566272228f5ca8b3d2e891aa33af8b9148c9010
[root@localhost ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
vm1 latest c684bc6e5a38 7 seconds ago 231MB
[root@localhost ~]# docker run -d -it --name myvm1 vm1 /bin/bash
bac39aeaa709ef3539b079397a18e530418fcf68c9328fa33ac507f6fcf95e54
[root@localhost ~]# docker exec -it myvm1 /bin/bash
[root@bac39aeaa709 /]# ls
bin etc lib lost+found mnt proc run srv tmp var
dev home lib64 media opt root sbin sys usr