Hello, the following command should make it work: sudo docker run -it \ --name nextcloud-aio-mastercontainer \ --restart always \ -p 80:80 \ -p 8080:8080 \ -p 8443:8443 \ --volume nextcloud_aio_mastercontainer:/mnt/docker-aio-config \ -e NEXTCLOUD_DATADIR="/mnt/raid1" \ --volume /var/run/docker.soc…

Do yourself a favor and use the Nextcloud AIO, data can be mounted on /mnt/nc_data or any other mountpoint outside the containers. https://github.com/nextcloud/all-in-one

I guess the simplest way would be stopping all containers from the aio interface, creating a backup, use rsync to sync the files from the old datadir (in your case probably /var/lib/docker/volumes/nextcloud_aio_nextcloud_data/_data/ into e.g. /mnt/ncdata) and then removing and recreating the mastercontainer with -e NEXTCLOUD_DATADIR="/mnt/ncdata" and also starting the containers again from the aio interface.

Another solution would be stopping all containers from the aio interface, creating a backup, removing and recreating the mastercontainer with -e NEXTCLOUD_DATADIR="/mnt/ncdata" then restore the most recent backup and afterwards starting the containers again from the aio interface. In that case you should then delete the content of /var/lib/docker/volumes/nextcloud_aio_nextcloud_data/_data/ manually since the data would be duplicated otherwise.

Hope it helps!

Hi, see https://github.com/nextcloud/all-in-one#how-to-allow-the-nextcloud-container-to-access-directories-on-the-host

Hello, I figured out a solution to the problem. Here are the steps I followed. First, I followed the steps outline in the container reset instructions. Then I did the following. After starting the containers in the AIO tab, I allowed Nextcloud to fully start. I did the initial login with the …