move the logic for joining existing namespaces down to the rootless
package. In main_local we still retrieve the list of conmon pid files
and use it from the rootless package.
In addition, create a temporary user namespace for reading these
files, as the unprivileged user might not have enough privileges for
reading the conmon pid file, for example when running with a different
uidmap and root in the container is different than the rootless user.
Closes: https://github.com/containers/libpod/issues/3187
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
podman - Simple debugging tool for pods and images
podman is a daemonless container runtime for managing containers, pods, and container images.
It is intended as a counterpart to CRI-O, to provide low-level debugging not available through the CRI interface used by Kubernetes.
It can also act as a container runtime independent of CRI-O, creating and managing its own set of containers.
Use cases
Create containers
Start, stop, signal, attach to, and inspect existing containers
Run new commands in existing containers
Push and pull images
List and inspect existing images
Create new images by committing changes within a container
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