ok. Thank you, very helpful. I had read there was supposed to be the option to increase file uploads inside the GUI interface of owncloud in the Admin section, but I cant find anything there or in the UMC configuration. I am wondering if maybe the tmp directory used for uploads is running into issues with permissions perhaps? Do you happen to know what that path is defined as in your ini? Thank you - I did find this from docker info command:
WARNING: No swap limit support
WARNING: the overlay storage-driver is deprecated, and will be removed in a future release.
seems relevant maybe?