Add compatibility support for --debug flag from docker

[rhatdan]

This is another fix for #14917

Signed-off-by: Daniel J Walsh [email protected]

Does this PR introduce a user-facing change?

Podman now supports --debug, -D on the command line for Docker compatibility.

[openshift-ci]

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[mheon]

LGTM

[rhatdan]

BTW I can't do -D since it conflicts with -D in podman build. @Luap99 is there anyway to do this for everything except podman build?

[edsantiago]

LGTM but leaving open in case someone can answer the -D question.

[rhatdan]

I think we should merge and handle -D separately.

[mheon]

/lgtm