this post was submitted on 20 May 2025
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So, this has always bugged me. How do you validate a Docker container? No one wants to pull a laced up container, so there has to be a way one can check. Of course, sticking to original docker containers from Docker Hub would be one method I suppose. Is there some kind of scan one can do? I do this on my Windows computer; scan before installing. Besides looking at code that I would have no idea what is going on, what protocols do you guys use?

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[–] aksdb@lemmy.world 7 points 3 days ago (2 children)

Well, a big advantage of containers is, that you can isolate them pretty aggressively. So if you run a container that is supposed to serve content on a single HTTP port, expose only that port, mount no unnecessary volumes and run it on a network that blocks all outgoing traffic. Ideally the only thing left will be incoming traffic on the one port the service is supposed to serve.

[–] usuarioimanol@lemmy.world 1 points 2 days ago (1 children)

Block outgoing traffic, do you mean blocking it at my router or at the level of where I have the container hosted?

[–] aksdb@lemmy.world 1 points 2 days ago

I talk fully about software. Add appropriate nftable rules to the container network and that's it.