Document Archipelago Backup strategies (general ones)

[DiegoPino]

What?

We have a tiny little piece here: https://github.com/esmero/archipelago-deployment-live/blob/1.0.0-RC3/docs/upgradeFromD8ToD9.md That is clearly not deep enough.

• We need Complete Docker Backup
• S3 Backup
• Configs Backup

How to restore backups and also what is inside your backups.

[theMusician]

@davidbasswwu This might be good for us to collaborate on with the community, especially if we keep shipping our backups remotely.