Official Repository

Last pushed: 23 days ago
Short Description
A minimal Docker image based on Alpine Linux with a complete package index and only 5 MB in size!
Full Description

Supported tags and respective Dockerfile links

For more information about this image and its history, please see the relevant manifest file (library/alpine). This image is updated via pull requests to the docker-library/official-images GitHub repo.

For detailed information about the virtual/transfer sizes and individual layers of each of the above supported tags, please see the repos/alpine/ file in the docker-library/repo-info GitHub repo.

What is Alpine Linux?

Alpine Linux is a Linux distribution built around musl libc and BusyBox. The image is only 5 MB in size and has access to a package repository 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 and you can see how their mantra fits in right at home with Docker images.

How to use this image


Use like you would any other base image:

FROM alpine:3.3
RUN apk add --no-cache mysql-client
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.


This image is well documented. Check out the documentation at Viewdocs.

Supported Docker versions

This image is officially supported on Docker version 17.03.0-ce.

Support for older versions (down to 1.6) is provided on a best-effort basis.

Please see the Docker installation documentation for details on how to upgrade your Docker daemon.

User Feedback


If you have any problems with or questions about this image, please contact us through a GitHub issue. If the issue is related to a CVE, please check for a cve-tracker issue on the official-images repository first.

You can also reach many of the official image maintainers via the #docker-library IRC channel on Freenode.


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, 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.


Documentation for this image is stored in the alpine/ directory of the docker-library/docs GitHub repo. Be sure to familiarize yourself with the repository's file before attempting a pull request.

Docker Pull Command

Comments (38)
9 days ago

To install stuff, use apk add --update package command. Don't forget --update or it will fail on the first run.

10 days ago


With the latest version (3.5), I am experiencing below error.

ERROR: DNS lookup error
WARNING: Ignoring DNS lookup error
ERROR: DNS lookup error
WARNING: Ignoring DNS lookup error
ERROR: unsatisfiable constraints:
  bash (missing):
    required by: world[bash]
  ca-certificates (missing):
    required by: world[ca-certificates]
  curl (missing):
    required by: world[curl]

Can anyone please help me on resolving it and moving forward


19 days ago

does anyone know what the root password is ?

a month ago

I search php7-redis and found this:
In Dockerfile I do apk update && apk upgrade.
But alpine:latest and alpine:edge can't find this package.
May be I doing something wrong?
Thank you.
And thank you for avesome distrib, for your job.

2 months ago

Hi! Is there any plan to officially support a "glibc" version any time in the future? The official busybox images have a "glibc" version, but they don't have a default package manager like y'all, and I doubt the same community support. Official support for a solution that has "glibc" and a package manager would really help me make a case for my company to adopt this as a viable base image for our production needs. Thanks in advance!!!

2 months ago

I was trying the docker tutorial (self paced) and was unable to complete the tutorial's first docker app creation due to the builder failed at RUN APK ADD PY-PIP STEP giving unsatisfiable constraint error.
I resolved this issue by building the docker with 3.4 image instead of latest (3.5) which just goes fine.

3 months ago

Thanks!!! Kudos to the team for quick Response !!!

3 months ago

Please upgrade the image to v3.5 as we are not able to use php7 on v3.4. When can we expect an upgrade on this.

3 months ago

Please update the image to v3.5.

3 months ago

Alpine 3.5 was released yesterday. Waiting for docker image update!