If you have a VM, there is no need for docker. Start by installing ssh. Enable public key auth. Disable password authentication. Set up fail2ban with ssh. Set up ufw. Set up nextcloud. Avoid hosting your own mail, that’s another level of complexity. If you really need it, try mailcow.

If you have all that and didn’t touch a GUI on your way, you’re good to go.

Yes, you put the app in /opt, no not in /bin or /usr/bin

If you’re fine with #libreboot too, ask https://mas.to/@libreleah

This comment shows why I like Lemmy more than Reddit. Nuanced, acknowledging when the other person has a point without just yelling at each other.