Efficient template updating

good day,

i need some solution for following issue, i have templates clones from the initial one for different purposes and security breakage, like net qube template is separated from other ones to only use things which are needed for the purpose of the qube.

now when updating each template needs the updates and this is time and bandwidth consume. Is there any efficient way to setup a mirror qube which then will be used by other templates to recieve the updates? i see this like a kind of missing feature or if someone is willing to create such community template to be used for each template OS is very helpfull.

thanks in advance

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notes/apt-cacher-ng.md at master · unman/notes · GitHub
shaker/cacher at main · unman/shaker · GitHub
qusal/salt/sys-cacher at main · ben-grande/qusal · GitHub

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i went with the unman’s great repo and cacher script. though there is a little bug in it, as the debian-12-minimal was not installed and template updates were ongoing for other stuff, which then made the changes in all qubes without the cache qube existing. additional it also runs the changes for the whonix templates which end with error 20, in the log it shows “no changes need to be made”.

Here a check if the debian-12-minimal template is existing along with the template manager is currently busy would prevent the issue, and last issue to skip any template with whonix running