# 常见问题

### 如何实时调试开发？

1. 代码不放入镜像，使用volume挂载放入容器。
2. docker环境代码挂载到本地

### windows下docker挂载有问题

命令： winpty docker run -it -p 80:80 -v //d/xampp/htdocs/swoft:/var/www/swoft2 zhubing/swoft bash 其中 /var/www/swoft2为文件目录

1. 权限问题：Setting => Shared Drives
2. windows下路径，要使用双斜杠开头

### Docker端口映射实现网络访问

ip:hostport:containerport #指定ip、指定主机port、指定容器port ip::containerport #指定ip、未指定主机port、指定容器port hostport:container #未指定ip port、指定主机port、指定容器port

### Docker安装mysql

<http://www.andrewchen.tw/2017/05/05/20170505\\_NOTE\\_DOCKER\\_MYSQL/>

1. docker run --name mysql -e MYSQL\_ROOT\_PASSWORD=MY\_PASSWORD -p 127.0.0.1:3306:3306 -d mysql/mysql-server:5.7
2. docker exec -it mysql mysql -u root -p\
   USE mysql;\
   UPDATE user SET host = '%' WHERE user = 'root';\
   FLUSH PRIVILEGES;
3. docker run --name phpadmin --link mysql:db -p 9998:80 -d phpmyadmin/phpmyadmin

### 报错：lient.Timeout exceeded while awaiting headers

Get <https://registry-1.docker.io/v2/>: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)

阿里云加速器有问题，更换加速器DaoCloud

### docker-compose vs docker run

1. <https://beginor.github.io/2017/06/08/use-compose-instead-of-run.html>

### Docker参数问题 以及 环境变量设置

1. docker build --build-arg
2. docker run
3. env\_file

\###　pcel安装redis失败 采取下载包安装解压的方式

### How to prevent Dockerfile caching git clone

ARG CACHE\_DATE=2016-01-01 RUN git clone ...

docker build --build-arg CACHE\_DATE=$(date) .... 问题链接：<https://stackoverflow.com/questions/36996046/>

### core-dump磁盘报警

RUN echo 'ulimit -S -c 0 > /dev/null 2>&1' >> /root/.bashrc RUN /bin/bash -c "source /root/.bashrc" 参考资料：<http://blog.51cto.com/buranle/1677642>

### 在分配的测试机（Docker容器）上启了Docker服务，测试机挂掉。

原因：在Docker容器上不能直接启用Docker服务 解决方案是：Docker in Docker，实现在Docker容器中启动一个子容器。

## 参考资料

* [docker错误一览](https://www.jianshu.com/p/605a7c0e1d0f)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://bing.gitbook.io/phper/cloud/docker/chang-jian-wen-ti.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.