docker_practice/cases/os/alpine.md

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# Alpine
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##
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![Alpine Linux ](./_images/alpinelinux-logo.png)
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`Alpine` `Linux` `Linux` `Alpine` `musl libc` `busybox` `busybox` `Alpine` `apk` `https://pkgs.alpinelinux.org/packages` `apk`
`Alpine` 广 `Linux`/`Linux``Alpine` /
`Alpine` Docker `Alpine Linux` `Docker` **5 MB** `Ubuntu` `200 MB` `docker-alpine`
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Docker 使 `Alpine` `Ubuntu` 便
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```bash
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REPOSITORY TAG IMAGE ID VIRTUAL SIZE
alpine latest 4e38e38c8ce0 4.799 MB
debian latest 4d6ce913b130 84.98 MB
ubuntu latest b39b81afc8ca 188.3 MB
centos latest 8efe422e6104 210 MB
```
## 使
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使 `docker run` `Alpine` Linux
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```bash
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$ docker run alpine echo '123'
123
```
## `Alpine`
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Docker `Alpine`
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* `ubuntu/debian` -> `alpine`
* `python:3` -> `python:3-alpine`
* `ruby:2.6` -> `ruby:2.6-alpine`
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使 `Alpine` `Ubuntu` `apk` `apt`
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```bash
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$ apk add --no-cache <package>
```
`Alpine` `https://pkgs.alpinelinux.org/packages` 使
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```bash
$ echo "http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories
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$ apk --update add --no-cache <package>
```
访 `apk` 使 `apk`
```docker
RUN sed -i "s/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g" /etc/apk/repositories \
&& apk add --no-cache <package>
```
##
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* `Alpine` https://www.alpinelinux.org/
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* `Alpine` https://github.com/alpinelinux
* `Alpine` https://hub.docker.com/_/alpine/
* `Alpine` https://github.com/gliderlabs/docker-alpine