docker使用指南&疑难杂症

使用指南

一 常见命令

二 非常见情况

1 构建包不成功留下一堆废镜像和容器如何清理？

https://blog.csdn.net/catoop/article/details/91908719

2 docker0 ip没了怎么办？

容器stop（不确定是否必须，关上保险），重启docker，再start容器

service docker restart

疑难杂症

1 non-zero code: 100

问题：Dockerfile构建镜像，旧文件一点没动，结果执行到apt各种包会报找不到。returned a non-zero code: 100

W: Failed to fetch http://mirrors.163.com/ubuntu/dists/bionic/InRelease  Temporary failure resolving 'mirrors.163.com'
W: Failed to fetch http://mirrors.163.com/ubuntu/dists/bionic-updates/InRelease  Temporary failure resolving 'mirrors.163.com'
W: Failed to fetch http://mirrors.163.com/ubuntu/dists/bionic-backports/InRelease  Temporary failure resolving 'mirrors.163.com'
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease  Temporary failure resolving 'security.ubuntu.com'
W: Some index files failed to download. They have been ignored, or old ones used instead.
Reading package lists...
Building dependency tree...
Reading state information...
E: Unable to locate package net-tools

The command '/bin/sh -c apt-get update &&    apt-get install net-tools -y &&    apt-get install iputils-ping -y &&    apt-get install vim -y &&    apt-get autoclean &&    apt-get autoremove' returned a non-zero code: 100

而且直接ping mirrors.163.com是通的。

解决：都说换源，对我一点用都不管。最后是这个起作用了。
可能是docker的dns有问题。https://zhuanlan.zhihu.com/p/422089996