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Are there any concerns/risks to using Watchtower? (alien.top)

submitted 10 months ago by [email protected] to c/[email protected]

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Someone recommended it for keeping my containers up to date automatically. I checked out the repo and it seems too good to be true. It just updates your containers when a new image is available and everything just works out of the box? I'm a bit scared of just leaving it alone in case it might break something. The fact that it doesn't come with a gui also scares me a bit.

Does anyone here use it and can recommend it? Any horror stories?

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[–] [email protected] 1 points 10 months ago

Yes, there are risks:

First, updates can break things. Already explained here.
Second, exposing Docker socket to Watchtower means you have to trust it ultimately. Any vulnerability in WT can lead to whole system compromise.

Personally, I use DIUN. It just sends me notifications about available updates. I update things manually later. My system is pretty well isolated from outside world, so no need to hurry.
On a VPS, I would prefer a different approach though.