Docker

2017-03-14T00:31:18Z

Metricmike: Undo revision 13162 by Metricmike (talk)

Alpine makes a great docker container, because it is so small and optimized to be run in RAM.
It might also might make a good controller for several docker containers with enough RAM. I haven't tested this yet
Docker's setup is easy to use from command line. Commands can be run from an interactive shell, or through a configuration file called a "Dockerfile".
docker.com has excellent walk-throughs on how to run, pull, setup a container, commit an image, and create a configuration file. hub.docker.com is a freemium setup, where the first private repository is free.

== Installation ==

Run <code>apk add docker</code> to install Docker on Alpine Linux.

The Docker package is in the 'Community' repository, so if the '''apk add''' fails with '''unsatisfiable constraints''', you need to edit the '''/etc/apk/repositories''' file to add (or uncomment) a line like:

<code>http://dl-6.alpinelinux.org/alpine/edge/community</code>

'''To start the Docker daemon at boot, run:'''

<code>rc-update add docker boot</code>

'''Then to start the Docker daemon manually, run:'''

<code>service docker start</code>

{{Note|On older version of Alpine Linux with older version of docker you'll also need to disable some kernel security flags in order to build images:}}

<code>sysctl -w kernel.grsecurity.chroot_deny_chmod=0</code>

<code>sysctl -w kernel.grsecurity.chroot_deny_mknod=0</code>

For more information, have a look at the [https://github.com/docker/docker/issues/20303 corresponding Github issue].

Anyway, this weakening of security is not necessary to do with Alpine 3.4.x and Docker 1.12 as of August 2016 anymore.

=== Docker Compose ===

'''To install docker-compose, first install pip:'''

<code>apk add py-pip</code>

'''Then install docker-compose, run:'''

<code>pip install docker-compose</code>

== Example: How to install docker from Arch ==

https://wiki.archlinux.org/index.php/Docker

== '''How to use docker''' ==

The best documentation for how to use Docker and create containers is at the main docker site. Adding anything more to it here would be redundant.

'''http://docs.docker.com/'''

if you create an account at docker.com you can browse through other user's images and learn from the syntax in contributor's dockerfiles.

Official Docker image files are denoted by a blue ribon on the website.

Docker

2017-03-13T23:45:32Z

Metricmike: add note for 3.5: py-pip is renamed to py2-pip

Alpine makes a great docker container, because it is so small and optimized to be run in RAM.
It might also might make a good controller for several docker containers with enough RAM. I haven't tested this yet
Docker's setup is easy to use from command line. Commands can be run from an interactive shell, or through a configuration file called a "Dockerfile".
docker.com has excellent walk-throughs on how to run, pull, setup a container, commit an image, and create a configuration file. hub.docker.com is a freemium setup, where the first private repository is free.

== Installation ==

Run <code>apk add docker</code> to install Docker on Alpine Linux.

The Docker package is in the 'Community' repository, so if the '''apk add''' fails with '''unsatisfiable constraints''', you need to edit the '''/etc/apk/repositories''' file to add (or uncomment) a line like:

<code>http://dl-6.alpinelinux.org/alpine/edge/community</code>

'''To start the Docker daemon at boot, run:'''

<code>rc-update add docker boot</code>

'''Then to start the Docker daemon manually, run:'''

<code>service docker start</code>

{{Note|On older version of Alpine Linux with older version of docker you'll also need to disable some kernel security flags in order to build images:}}

<code>sysctl -w kernel.grsecurity.chroot_deny_chmod=0</code>

<code>sysctl -w kernel.grsecurity.chroot_deny_mknod=0</code>

For more information, have a look at the [https://github.com/docker/docker/issues/20303 corresponding Github issue].

Anyway, this weakening of security is not necessary to do with Alpine 3.4.x and Docker 1.12 as of August 2016 anymore.

=== Docker Compose ===

'''To install docker-compose, first install pip:'''

<code>apk add py-pip</code>
{{Note|On Alpine Linux 3.5, the package is named py2-pip}}

'''Then install docker-compose, run:'''

<code>pip install docker-compose</code>

== Example: How to install docker from Arch ==

https://wiki.archlinux.org/index.php/Docker

== '''How to use docker''' ==

The best documentation for how to use Docker and create containers is at the main docker site. Adding anything more to it here would be redundant.

'''http://docs.docker.com/'''

if you create an account at docker.com you can browse through other user's images and learn from the syntax in contributor's dockerfiles.

Official Docker image files are denoted by a blue ribon on the website.

Alpine Linux - User contributions [en]

Docker

Docker