this post was submitted on 10 Dec 2023
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No Stupid Questions (Developer Edition)

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Do containers only work on their relevant OS (i.e. Linux distro/MacOS/Windows) + container engine? (lemm.ee)
submitted 11 months ago* (last edited 11 months ago) by [email protected] to c/no_stupid_questions
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I think from what I've read that this is the case, but I've read some other info that's made it less clear to me.

On the second part of the question regarding container engines, I'm pretty sure that may also be correct, and it kinda makes me wonder a little about risks of engine lock-in, but that may be a little out of scope.

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[–] varsock 4 points 11 months ago* (last edited 11 months ago) (3 children)

TIP: programs that run inside docker containers should be compatible with the host system's kernel.

If you want to run a container targeted for a linux distro on windows, you need some intermediate that will translate Linux sys calls to windows ones. I don't have experience with this but I believe that's what WSL accomplishes? Among other things.

Regarding your question about lock-in, if I understand it correctly, you are targeting the kernel really, thats the "engine". So "lock-in" is about the same as you choosing which OS to target.

[–] [email protected] 1 points 11 months ago (1 children)

Regarding your question about lock-in, if I understand it correctly, you are targeting the kernel really, thats the “engine”. So “lock-in” is about the same as you choosing which OS to target.

I may have been using the wrong terminology. Going off another reply here what I was referring to may also be called an orchestrator? So by this I was referring to software like Docker and possibly getting tied up in it.

[–] varsock 2 points 11 months ago

I see. That's a good question because I'm not even aware of other "orchestrators" outside of kubernetes 😅

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