## docker镜像加速，Dockerfile镜像构建时源加速
### 镜像加速
``` Bash
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://hub-mirror.c.163.com"]
}
EOF
```
### Dockerfile镜像构建时源加速
slim debain类，使用 sed -i "s/deb.debian.org/ftp.cn.debian.org/g" /etc/apt/sources.list
``` Dockerfile
FROM python:3.10.2-slim as build
RUN sed -i "s/deb.debian.org/ftp.cn.debian.org/g" /etc/apt/sources.list && \
apt-get update && \
apt-get install -y gcc
```
alpine类，使用 sed -i "s/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g" /etc/apk/repositories
``` Dockerfile
FROM python:3.9.0-alpine
RUN sed -i "s/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g" /etc/apk/repositories \
&& apk update && apk upgrade \
&& apk add --no-cache bash libxml2-dev libxslt-dev gcc
```