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A comment on Linux 3.8 introduced unprivileged user namespaces [pdf]. Parent comment

Re:Linux 3.8 introduced unprivileged user namespaces [pdf] by aorth on Wednesday December 18, 2019 @12:56PM (#21827408)
> You can `alias podman=docker` and it will just work.

Yes, and it's super awesome. Unless you need docker-compose!

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Re:Linux 3.8 introduced unprivileged user namespaces [pdf] by thinkmassive on Wednesday December 18, 2019 @02:07PM (#21828121)
Podman supports pods, hence the name. It follows the k8s approach, and it’s nowhere close to a drop-in replacement for docker-compose, but managing multiple related containers is supported as a core feature.

https://developers.redhat.com/blog/2019/01/15/podman-managin...

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Re:Linux 3.8 introduced unprivileged user namespaces [pdf] by thenewnewguy on Wednesday December 18, 2019 @03:39PM (#21829171)
> Unless you need docker-compose!

There's a solution for that :) (Note: still somewhat beta quality)

https://github.com/containers/podman-compose

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