I've got a docker install of Filerun - however, I can't register. I get the following error:
Any suggestions on how to fix?
As the error implies, you need to adjust the permissions of the folder "/www/html/system/data" to make it writable by PHP/Docker.
This looks to be a problem with the docker image? Should the default image be modified to rectify this issue?
No, it's a permissions problem from your mounted volume. "/var/www/html/system/data" needs to be writable by Docker. You need to adjust your folder permissions accordingly.
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