Debugging containers that have no shell (docs.docker.com)

Docker Debug was previously a paid-for feature, now available for free since v4.49

Only for "Docker Desktop 4.49 and later"

Does podman contain or plan to implement something similar? Seems very useful.

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Please note the analogous mechanism on kubernetes ("ephemeral containers") works only with the pod's shareProcessNamespace: true setting, which is usually off. So you won't be able to do this out of the box with your deployment already running on a typical stack