Add documentation for Yacy config

docs/tutorials/web-search/yacy.md

@@ -0,0 +1,28 @@
+---
+sidebar_position: 16
+title: "Yacy"
+---
+
+:::warning
+This tutorial is a community contribution and is not supported by the Open WebUI team. It serves only as a demonstration on how to customize Open WebUI for your specific use case. Want to contribute? Check out the contributing tutorial.
+:::
+
+## Yacy API
+
+### Setup
+
+1. Navigate to: `Admin Panel` -> `Settings` -> `Web Search`
+2. Toggle `Enable Web Search`
+3. Set `Web Search Engine` from dropdown menu to `yacy`
+4. Set `Yacy Instance URL` to one of the following examples:
+
+    * `http://yacy:8090` (using the container name and exposed port, suitable for Docker-based setups)
+    * `http://host.docker.internal:8090` (using the `host.docker.internal` DNS name and the host port, suitable for Docker-based setups)
+    * `https://<yacy.local>:8443` (using a local domain name, suitable for local network access)
+    * `https://yacy.example.com` (using a custom domain name for a self-hosted Yacy instance, suitable for public or private access)
+    * `https://yacy.example.com:8443` (using https over the default Yacy https port)
+
+5. Optionally, enter your Yacy username and password if authentication is required for your Yacy instance. If both are left blank, digest authentication will be skipped
+6. Press save
+
+![Open WebUI Admin panel showing Yacy config](/images/tutorial_yacy.png)