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 This guide helps Gitea admins perform upgrades safely and provides guidance to troubleshoot problems. It covers [Gitea 1.2.0](https://github.com/go-gitea/gitea/releases/tag/v1.2.0) and above.
 
+There are [many ways to install Gitea](https://docs.gitea.io/en-us/install-with-docker/) on various Operating Systems, each with their particular challenges and potential for trouble. The scope of this guide is limited to what [Hostea](https://hostea.org) uses daily:
+
+* Docker based installation (either [root](https://docs.gitea.io/en-us/install-with-docker/) or [rootless](https://docs.gitea.io/en-us/install-with-docker-rootless/)) using the [Gitea images published on the Docker hub](https://hub.docker.com/r/gitea/gitea).
+* Any GNU/Linux based Operating Systems
+
+It is the source of truth that Hostea members use when maintaining the infrastructure and developing the service.
+
 #### Backup
 
 In all cases the only reliable way to perform a backup is with a [synchronized point-in-time snapshot of all the storage used by Gitea](https://github.com/go-gitea/gitea/issues/19752#issuecomment-1133627365). For instance, if everything (SQLite database + repositories etc.) is on a single QCOW2 disk attached to a virtual machine, a [qemu snapshot](https://wiki.qemu.org/Features/Snapshots) guarantees the backup is consistent.