Create the user who should run the service, or choose an existing one.(Skip if your distribution package already installs these files, see above.) From git location copy the syncthing@.service file into the load path of the system instance. On Debian 12, the path of the file is ‘/usr/lib/systemd/system’. I added the following line to the [Service] section of the file:

Group=users

Enable and start the service. Replace “myuser” with the actual Syncthing user after the @:

$ sudo systemctl enable syncthing@myuser.service
$ sudo systemctl start syncthing@myuser.service

Reference

https://docs.syncthing.net/users/autostart.html

IMAPdump, requires OpenSSL to be installed. Install it using the following command:

$ sudo apt install openssl

The IO::Socket::SSL Perl module is also required. First, install using the following command:

$ sudo perl -MCPAN -e shell

Then enter the following command from within the cpan shell:

cpan[1]> install IO::Socket::SSL

Now IMAPdump should run without errors. You can download it from https://github.com/andrewnimmo/rick-sanders-imap-tools.

This article assumes that you have all of your files in the /volume1 folder. In order to be able to access these files from within Nextcloud’s External Storage app, you will need to add the following line in /etc/fstab:

/volume1 /mnt/volume1 none bind

Also, until Redis packages are made to take advantage of the larger page size of the Raspberry Pi 5, we will have to add the following line to /boot/firmware/config.txt:

kernel=kernel8.img

Now install nextcloud using the following commands:

$ sudo apt install snapd
$ sudo snap install snapd
$ sudo snap install nextcloud

You should now be able to access the Nextcloud installer by entering the Pi’s IP address in a browser on the same network. If you want to install an SSL certificate then use the following command:

$ sudo /snap/bin/nextcloud.enable-https lets-encrypt

You will be asked to provide an email address and the domain name to be used. You will need to add the following lines to the config.php file for Nextcloud. This file should be located in /var/snap/nextcloud/current/nextcloud/config/config.php.

'overwritehost' => 'example.com',
'overwriteprotocol' => 'https',
'trusted_domains' => 
array (
  0 => 'example.com',
),

Now you should be able to access Nextcloud using your domain name.

References

https://help.nextcloud.com/t/redis-crashing-on-startup-after-swapping-rpi4-8gb-with-rpi5-8gb/182242

https://snapcraft.io/install/nextcloud/debian

https://github.com/nextcloud-snap/nextcloud-snap/wiki/Nextcloud-snap-step-by-step/38e0ac1ceb23a990f10471546b95e2f04f060314