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Exposing docker socket to a container (discuss.tchncs.de)

submitted 2 days ago by 5ymm3trY@discuss.tchncs.de to c/selfhosted@lemmy.world

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Do you guys expose the docker socket to any of your containers or is that a strict no-no? What are your thoughts behind it if you don't? How do you justify this decision from a security standpoint if you do?

I am still fairly new to docker but I like the idea of something like Watchtower. Even though I am not a fan of auto-updates and I probably wouldn't use that feature I still find it interesting to get a notification if some container needs an update. However, it needs to have access to the docker socket to do its work and I read a lot about that and that this is a bad idea which can result in root access on your host filesystem from within a container.

There are probably other containers as well especially in this whole monitoring and maintenance category, that need that privilege, so I wanted to ask how other people handle this situation.

Cheers!

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[–] 5ymm3trY@discuss.tchncs.de 1 points 15 hours ago

I am a strong believer in separate docker compose files to keep it more organized and hopefully have more control over everything. But in the end most of it comes down to personal preference.

I actually have some kind of network issues with one of my containers at the moment (Adguard in this case), where your ideas already came in handy. Unfortunately, I couldn't solve it yet, but this is also something for a new topic I believe.