docs: community all in one (#1301)

docs/docs/install/all-in-one.md

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+---
+sidebar_position: 99
+---
+
+# All-In-One [Community]
+
+:::note
+This is a community contribution and not officially supported by the Immich team, but included here for convenience.
+
+**Please report issues to the corresponding [Github Repository][github].**
+:::
+
+## Installation
+
+For installation instructions, refer to the [Github Repository][github].
+
+## Issues
+
+For issues, open an issue on the associated [GitHub Repository][github].
+
+[github]: https://github.com/martabal/docker-immich