Docker Snap
๐ This repository has been archived.
NOTE: The Docker Snap is no longer maintained by Docker, Inc. The last release version was 17.06.2. The future of the Docker Snap is unclear, but it won't be developed here going forward. The source at https://code.launchpad.net/~docker/+git/snap appears to be where new development efforts are taking place, and the Snapcraft forums (https://forum.snapcraft.io/) are probably your best bet to reach the new maintainers.
This repository contains the source for the docker
snap package. The package provides a distribution of Docker Community Edition (CE) for Ubuntu Core 16 (and other snap-compatible) systems. It is built from an upstream Docker CE release tag with some patches to fit the snap format and is available on armhf
, arm64
, amd64
, i386
, and ppc64el
architectures. The rest of this page describes installation, usage, and development.
Installation
To install the latest stable release of Docker CE using snap
:
$ sudo snap install docker
If you are using Ubuntu Core 16,
-
Connect the
docker:home
plug as it's not auto-connected by default:$ sudo snap connect docker:home
If you are using an alternative snap-compatible Linux distribution ("classic" in snap lingo), and would like to run docker
as a normal user:
-
Create and join the
docker
group.$ sudo addgroup --system docker $ sudo adduser $USER docker $ newgrp docker
-
You will also need to disable and re-enable the
docker
snap if you added the group while it was running.$ sudo snap disable docker $ sudo snap enable docker
Usage
Docker should function normally, with the following caveats:
-
All files that
docker
needs access to should live within your$HOME
folder.- If you are using Ubuntu Core 16, you'll need to work within a subfolder of
$HOME
that is readable by root. #8
- If you are using Ubuntu Core 16, you'll need to work within a subfolder of
-
docker-compose
is available asdocker.compose
due to snap naming restrictions. -
Additional certificates used by the Docker daemon to authenticate with registries need to be located in
/var/snap/docker/common/etc/certs.d
instead of/etc/docker/certs.d
.
Examples
Development
Developing the docker
snap package is typically performed on a "classic" Ubuntu distribution. The instructions here are written for Ubuntu 16.04 "Xenial".
-
Install the snap tooling (requires
snapd>2.21
andsnapcraft>=2.26
):$ sudo apt-get install snapd snapcraft $ sudo snap install core
-
Checkout this repository and build the
docker
snap package:$ git clone https://github.com/docker/docker-snap $ cd docker-snap $ sudo snapcraft
-
Install the newly-created snap package:
$ sudo snap install --dangerous docker_[VER]_[ARCH].snap
-
Manually connect the relevant plugs and slots which are not auto-connected:
$ sudo snap connect docker:privileged :docker-support $ sudo snap connect docker:support :docker-support $ sudo snap connect docker:firewall-control :firewall-control $ sudo snap connect docker:docker-cli docker:docker-daemon $ sudo snap disable docker $ sudo snap enable docker
You should end up with output similar to:
$ sudo snap interfaces docker Slot Plug :docker-support docker:privileged,docker:support :firewall-control docker :home docker :network docker :network-bind docker docker:docker-daemon docker:docker-cli