Docker now provides updates through the yum package manager. I suggest you follow those instructions to install the latest docker. On the Docker installation guide for CentOS 7, it is advised to install docker from the binaries if you want the latest. Once you are confident you have all the backups you need for an eventual fresh start you can move on upgrading your Docker daemon. For that take a look at the Docker user guide on data volumes.
You might also want to backup your containers' volumes. To do so, take a look at the docker export command. See the Docker CHANGELOG to discover the latest version.īefore upgrading your docker host, you might want to backup some of the docker images you have, especially those issued from the docker commit command. Note that current stable version of Docker is actually 1.3, not 1.2.
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