1、ping
First solve the permission problem
Execute in docker:
apt-get update
Report an error:
E: List directory /var/lib/apt/lists/partial is missing. - Acquire (13: Permission denied)
Cause of the problem: Insufficient permissions, please use root user
Solution:0 means root user
docker exec -it id /bin/bash // Change to docker exec -u 0 -it id /bin/bash
ping solution
Cause of the problem：
root@xxxxxxx:/# ping
bash: ping: command not found
Solution：
- Enter docker first
docker exec -u 0 -it dockerName orid /bin/bash
- Update apt
apt-get update
Install plug-in ping：
apt install iputils-ping apt install net-tools
2、ip
Cause of the problem：
root@xxxxxxx:/# ip a
bash: ip: command not found
Solution：
apt update && apt install -y iproute2
Summarize
The above is personal experience. I hope you can give you a reference and I hope you can support me more.