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I got familiar with container intervals via, basically, "building images without docker"

One example: https://ravichaganti.com/blog/2022-11-28-building-container-...

Thanks for the link!

> I got familiar with container intervals via, basically, "building images without docker"

That's been my approach, as well. However, right now I'm stuck at getting overlayfs to work without privileges (easy: use `unshare`), while not breaking rootless runc (apparently not so easy).

EDIT: I solved my issue. Looks like I don't need to `unshare` by hand but runc actually does this already:

https://github.com/psanford/runc-examples/blob/master/rootle...

Did you ever try running any containers without pushing to a registry? That is the part I can't wrap my head around yet? How do I get the run time to start the container locally?

I'm not sure I'm following. What part of running a container would entail pushing anything to a registry?

You can build an image with docker, and run it locally.

You can also use docker save to get a tarball and ship that file to another machine, which can be run through docker load and then run as if it was built locally.

If you have an oci bundle, you might look at runc instead: https://github.com/opencontainers/runc

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