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Do you backup your docker images? (lemmy.world)
submitted 9 months ago by to c/selfhosted@lemmy.world
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Not containers and data, but the images. The point would be reproducability in case a remote registry does not contain a certain image anymore. Do you do that and how?

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[–] 17 points 9 months ago (2 children)

if there are some custom image, e.g. additional stuff I added to an existing image, then I backup the dockerfile. you can rebuild the image anytime and the size is smaller than a binary.

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  • [–] 8 points 9 months ago

    Came here to say that: the most economic solution is to backup any dockerfiles themselves, though that also has the caveat that any installs within the build steps might also depend on external resources that could also be dropped.

    There are methods of adding a local caching layer between your system and external, which might be what OP is after, but that involves investing in the additional space needed to back them up

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