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moby--moby/docs/sources/installation/upgrading.rst

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:title: Upgrading
:description: These instructions are for upgrading Docker
:keywords: Docker, Docker documentation, upgrading docker, upgrade
.. _upgrading:
Upgrading
=========
The technique for upgrading ``docker`` to a newer version depends on
how you installed ``docker``.
.. versionadded:: 0.5.3
You may wish to add a ``docker`` group to your system to avoid using sudo with ``docker``. (see :ref:`dockergroup`)
After ``apt-get``
-----------------
If you installed Docker using ``apt-get`` or Vagrant, then you should
use ``apt-get`` to upgrade.
.. versionadded:: 0.6
Add Docker repository information to your system first.
.. code-block:: bash
# 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 :ref:`binaries` then follow these steps:
.. code-block:: bash
# kill the running docker daemon
killall docker
.. code-block:: bash
# 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.
.. code-block:: bash
# start the new version
sudo ./docker -d &
Alternatively you can replace the docker binary in ``/usr/local/bin``.