Add the documentation for debugging

[utam0k]

No description provided.

[yihuaf]

Just to add that another way is to send the youki logs to systemd. This will let systemd capture all the logs from different processes in the case that stdout fails. youki as a binary supports this out of box, but libcontainer needs caller to configure this correctly.

[YJDoc2]

lgtm, and as yihuaf said, it'd good to add the systemd info as well

[utam0k]

Just to add that another way is to send the youki logs to systemd. This will let systemd capture all the logs from different processes in the case that stdout fails. youki as a binary supports this out of box, but libcontainer needs caller to configure this correctly.

@yihuaf
You have more knowledge about it than me around using systemd info so could you add the documentation? Of course, I'm looking forward to the doc you wrote to know another way to debug.