When Ubuntu patches are issued, how do I apply those updates to the template used to create new LXC containers?
We have a script to assist with this.
The tarfile contains the script and Installation instructions. It will need to be run on each node running a DEA or a Stager at any time that you would like to apply updates*. This should be done interactively from the command line, so that you can monitor the progress.
New containers launched after our script is run will have the updates applied. Containers started before the updates were applied will not be altered, but you can migrate running droplets to updated containers on other DEAs. See this FAQ for a more detailed description of moving apps.
*Note that the actual updates that will be installed are provided by the Ubuntu community, and what you install when you run our script will depend on what is available, and what you have already installed.