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doc: Add warning about docker-compose/podman-compose compatibility issues

Users appear to run into compatibility issues where podman-compose
does not behave exactly as docker-compose. Add a warning that those
issues exist, and that reports about them are welcome on the
Tutor Discourse.

Reference:
https://discuss.overhang.io/t/tutor-with-podman-not-working/905/2
This commit is contained in:
Florian Haas 2020-09-10 11:09:49 +02:00 committed by Régis Behmo
parent f5f501dad0
commit 0f50300ad6

View File

@ -3,10 +3,12 @@ Running Tutor with Podman
You have the option of running Tutor with `Podman <https://podman.io/>`__, instead of the native Docker tools. This has some practical advantages: it does not require a running Docker daemon, and it enables you to run and build Docker images without depending on any system component running ``root``. As such, it is particularly useful for building Tutor images from CI pipelines.
The ``podman`` CLI aims to be fully compatible with the ``docker`` CLI, and ``podman-compose`` is a fully-compatible alias of ``docker-compose``. This means that you can use both together with Tutor, without making any changes to Tutor itself.
The ``podman`` CLI aims to be fully compatible with the ``docker`` CLI, and ``podman-compose`` is meant to be a fully-compatible alias of ``docker-compose``. This means that you should be able to use together with Tutor, without making any changes to Tutor itself.
.. warning::
You should not attempt to run Tutor with Podman on a system that already has native ``docker`` and ``docker-compose`` installed. If you want to switch to ``podman`` and ``podman-compose`` using the aliases described here, uninstall the native Docker packages first.
Some users have reported that while ``podman`` is a suitable drop-in replacement for ``docker`` for them, some compatibility issues do exist between ``podman-compose`` and ``docker-compose``. If you run into such compatibility issues, please report them on `Discourse <https://discuss.overhang.io/>`_.
You should not attempt to run Tutor with Podman on a system that already has native ``docker`` installed. If you want to switch to ``podman`` using the aliases described here, you should uninstall (or at least stop) the native Docker daemon first.
Enabling Podman