How docker install centos image

1. Pull the centos7 image

[root@localhost ~]# docker pull centos:7

2. Start the centos7 image. If /bin/bash is not specified, the container will automatically stop after running

[root@localhost ~]# docker run -d -i -t <IMAGE ID> /bin/bash

3. Enter the container

[root@localhost ~]# docker exec -it <CONTAINER ID> bash

4. After entering, you find that there is no ifconfig, install it directly with yum

[root@8f10fbd6bd5a /]# yum install -y net-tools

5 , Unable to ping the external network, find the information and rebuild the docker0 network to solve the problem

[root@localhost ~]# pkill docker
[root@localhost ~]# iptables -t nat -F
[root@localhost ~]# ifconfig docker0 down
[root@localhost ~]# brctl delbr docker0
[root@localhost ~]# systemctl restart docker
[root@localhost ~]# docker start <CONTAINER ID>

Recommended tutorial: docker tutorial

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