[BUG] mjpg_steamer fails and needs to be restarted

[rtorchia]

I've been running this container on my Raspberry Pi 4, and have found it working great, except for the mjpg_streamer process, which randomly crashes and the video from my webcam stops.

I can reset it, and get it working again, by killing the process with this command:

sudo /usr/bin/docker exec octoprint pkill mjpg_streamer

Running this as a cron job keeps it going, but I feel like this is just a Band-Aid to the a possible real problem with the mjpg_streamer process.

Is this just my system, or a general problem others are experiencing?