📚 Add n8n documentation page

docs/server-setup.md

@@ -0,0 +1,16 @@
+# Server Setup
+
+!> ***Important***: Make sure that you secure your n8n instance like described under [Security](security.md)!
+
+To run n8n on your webserver with own domain some environment variables
+should be set to the appropriate values.
+
+A possible configuration to run n8n on `https://n8n.example.com/` would look
+like this:
+
+```bash
+export N8N_HOST="n8n.example.com"
+export N8N_PROTOCOL=https
+export N8N_PORT=443
+export VUE_APP_URL_BASE_API="https://n8n.example.com/"
+```