Docker container keeps loosing connection/access - DB constantly busy

[ChuckPa]

1. mount the media in identical places (easiest)
2. Create a systemd override file to move the “PLEX_MEDIA_SERVER_APPLICATION_SUPPORT_DIR” to the existing metadata directory
3. In that override, we can also map to the appropriate UID/GID.
   ( I have the How-To here)

Customizing your Plex configuration

Customizing your Plex configuration on systemd based systems This information is intended for those systems where cat /proc/1/comm returns systemd. On systems which use Systemd (Ubuntu 16+, Fedora, Centos 7, Debian 8,) you create this customization file which SystemD reads prior to launching PMS. This file is independent of the default configuration and service control mechanisms in /lib/systemd/system/plexmediaserver.service. Your customization override is preserved across updates, uninstal…

Moving PMS 'Library'

Moving Plex’s metadata (Library) directory on systemd based systems This information is intended for those systems where cat /proc/1/comm returns systemd. If your system returns init, please see the next post in this thread. While you may change /lib/systemd/system/plexmediaserver.service, it is under the control of the package manager and subject to replacement without warning at any time during an update. To provide stability, systemd allows creation of an override.conf file to customiz…

Done correctly, with UID / GID mapping, you could conceivably jump in and out of Docker on a whim