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# Supported tags and respective `Dockerfile` links
- [`edge` (*versions/library-edge/Dockerfile*)](https://github.com/gliderlabs/docker-alpine/blob/09c2fde27b1aa585009a070dc9cc13a020a30cf9/versions/library-edge/Dockerfile)
- [`3.1`, `latest` (*versions/library-3.1/Dockerfile*)](https://github.com/gliderlabs/docker-alpine/blob/337bd45a6de1404ceb7c7a0a2fd01744b488eaef/versions/library-3.1/Dockerfile)
- [`2.7` (*versions/library-2.7/Dockerfile*)](https://github.com/gliderlabs/docker-alpine/blob/2a7b889be5868aee4706fd8498e6b11630e8ace2/versions/library-2.7/Dockerfile)
- [`2.6` (*versions/library-2.6/Dockerfile*)](https://github.com/gliderlabs/docker-alpine/blob/12cf56252dcb1535e0fbeb9c3e3586551af671ea/versions/library-2.6/Dockerfile)
For more information about this image and its history, please see the [relevant manifest file (`library/alpine`)](https://github.com/docker-library/official-images/blob/master/library/alpine) in the [`docker-library/official-images` GitHub repo](https://github.com/docker-library/official-images).
# What is Alpine Linux?
[Alpine Linux](http://alpinelinux.org/) is a Linux distribution built around [musl libc](http://www.musl-libc.org/) and [BusyBox](http://www.busybox.net/). The image is only 5 MB in size and has access to a [package repository](http://forum.alpinelinux.org/packages) that is much more complete than other BusyBox based images. This makes Alpine Linux a great image base for utilities and even production applications. [Read more about Alpine Linux here](https://www.alpinelinux.org/about/) and you can see how their mantra fits in right at home with Docker images.
![logo](https://raw.githubusercontent.com/docker-library/docs/master/alpine/logo.png)
# How to use this image
## Usage
Use like you would any other base image:
FROM alpine:3.1
RUN apk add --update mysql-client && rm -rf /var/cache/apk/*
ENTRYPOINT ["mysql"]
This example has a virtual image size of only 16 MB. Compare that to our good friend Ubuntu:
FROM ubuntu:14.04
RUN apt-get update \
&& apt-get install -y mysql-client \
&& rm -rf /var/lib/apt/lists/*
ENTRYPOINT ["mysql"]
This yields us a virtual image size of about 232 MB image.
## Documentation
This image is well documented. [Check out the documentation at Viewdocs](http://gliderlabs.viewdocs.io/docker-alpine).
# Supported Docker versions
This image is officially supported on Docker version 1.5.0.
Support for older versions (down to 1.0) is provided on a best-effort basis.
# User Feedback
## Issues
If you have any problems with or questions about this image, please contact us through a [GitHub issue](https://github.com/gliderlabs/docker-alpine/issues).
You can also reach many of the official image maintainers via the `#docker-library` IRC channel on [Freenode](https://freenode.net).
## Contributing
You are invited to contribute new features, fixes, or updates, large or small; we are always thrilled to receive pull requests, and do our best to process them as fast as we can.
Before you start to code, we recommend discussing your plans through a [GitHub issue](https://github.com/gliderlabs/docker-alpine/issues), especially for more ambitious contributions. This gives other contributors a chance to point you in the right direction, give you feedback on your design, and help you find out if someone else is working on the same thing.