cli/components/engine/docs/sources/installation/upgrading.rst

title

Upgrading

description

These instructions are for upgrading Docker

keywords

Docker, Docker documentation, upgrading docker, upgrade

Upgrading

The technique for upgrading docker to a newer version depends on how you installed docker.

0.5.3 You may wish to add a docker group to your system to avoid using sudo with docker. (see dockergroup)

After apt-get

If you installed Docker using apt-get or Vagrant, then you should use apt-get to upgrade.

0.6 Add Docker repository information to your system first.

# Add the Docker repository key to your local keychain
sudo sh -c "curl https://get.docker.io/gpg | apt-key add -"

# Add the Docker repository to your apt sources list.
sudo sh -c "echo deb https://get.docker.io/ubuntu docker main > /etc/apt/sources.list.d/docker.list"

# update your sources list
sudo apt-get update

# install the latest
sudo apt-get install lxc-docker

After manual installation

If you installed the Docker binaries then follow these steps:

# kill the running docker daemon
killall docker

# get the latest binary
wget http://get.docker.io/builds/Linux/x86_64/docker-latest -O docker

# make it executable
chmod +x docker

Start docker in daemon mode (-d) and disconnect, running the daemon in the background (&). Starting as ./docker guarantees to run the version in your current directory rather than a version which might reside in your path.

# start the new version
sudo ./docker -d &

Alternatively you can replace the docker binary in /usr/local/bin.