Then copy the sample.conf to a new file, e.g. `cp sample.conf my.conf`, open the new conf file, e.g. with `nano my.conf`, edit all values that are marked with `# TODO!`, close and save the file.
Now copy the provided yaml file to a docker-compose file by running on x64 `cp latest.yml docker-compose.yml` and on arm64 `cp latest-arm64.yml docker-compose.yml`.
Since the AIO containers may change in the future, it is highly recommended to strictly follow the following procedure whenever you want to upgrade your containers.
1. Run `git pull` in order to get the updated yaml files from the repository. Now bring your `docker-compose.yml` file up-to-date with the updated one from the repository. You can use `diff docker-compose.yml latest.yml` on x64 and `diff docker-compose.yml latest-arm64.yml` on arm64 for comparing.
1. Also have a look at the `sample.conf` if any variable was added or renamed and add that to your conf file as well. Here may help the diff command as well.
If you leave `NEXTCLOUD_DATADIR` in your conf file at the default value of `nextcloud_aio_nextcloud_data` and don't modify the yaml file, all data will be stored inside docker volumes which are on Linux by default located here: `/var/lib/docker/volumes`. Simply backing up this location should be a valid backup solution. Then you can also easily restore in case something bad happens. However if you change `NEXTCLOUD_DATADIR` to a path like `/mnt/ncdata`, you obviously need to back up this location, too because the Nextcloud data will be stored there. The same applies to any change to the yaml file.