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Is it safe to automatically pull and update docker containers?
(lemmy.kde.social)
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this post was submitted on 03 Jul 2024
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I use Watchtower and haven't had any major issues in the two(?) years I've been using it. Make sure you use persistent volumes for your containers and make sure you back up those volumes. If anything breaks, you can roll back to before the update.
If you don't use persistent volumes, you'll lose data when Watchtower takes down the image and replaces it with the newer one (which doesn't copy over ephemeral volumes).
I also recommend for database containers to use an image tag that won't update with breaking changes. Don't use
postgres:latest, usepostgres:15.2or something like that (whatever the image you're using the database for recommends).