I haven’t used this tool specifically, but anything involving Youtube is always going to be an uphill battle. In the instance of a video downloader like Channeltube, you frequently need to feed it fresh cookies to make sure Youtube doesn’t flag it as a bot. I assume this is a similar situation.
The requirements also list ‘‘2gb if you restart frequently’’ so there might be a memory leak issue, or the way it’s setup means the RAM usage will increase in perpetuity.
I would just script a task to restart the docker container every hour. Shouldn’t be too much a hassle, you’re unlikely to ever notice since it shouldn’t take more than a few seconds. I would track its RAM usage over a few days too. See if there’s something fishy happening. Something like Beszel will let you track your docker socket, so usage per container. Preferably left on read only imo.