add instructions to deinstall opencloud

docs/admin/maintenance/uninstall.md

@@ -0,0 +1,81 @@
+---
+sidebar_position: 4
+id: uninstall
+title: "Uninstall"
+description:: "Guide to uninstall OpenCloud."
+---
+
+#  Uninstall OpenCloud with Docker Compose
+
+> ⚠️ **Warning:** This guide will completely remove all OpenCloud data. Make sure to back up any important files before proceeding.
+
+---
+
+## Step 1: Stop and Remove Docker Containers
+
+Navigate to your `opencloud-compose` directory (where your `docker-compose.yml` file is located), then run:
+
+```bash
+docker compose down
+```
+
+To also remove unnamed volumes and orphan containers:
+
+```bash
+docker compose down --volumes --remove-orphans
+```
+
+## Step 2: Remove Docker Volumes
+
+To check your existing volumes:
+
+```bash
+docker volume ls
+```
+Typical OpenCloud volumes may include:
+
+`opencloud_compose_opencloud-data`
+
+`opencloud_compose_opencloud-config`
+
+To delete specific volumes:
+
+```bash
+docker volume rm opencloud_compose_opencloud-data opencloud_compose_opencloud-config
+```
+
+Or to clean up all unused volumes (be careful!):
+
+```bash
+docker volume prune
+```
+
+## Step 3: Delete Mounted Directories (if used)
+
+If your .env referenced local folders such as /mnt/opencloud/data, you should delete those manually:
+
+```bash
+sudo rm -rf /mnt/opencloud/data
+sudo rm -rf /mnt/opencloud/config
+```
+Adjust the paths to match your setup.
+
+## Step 4: Remove the Compose Project Folder (Optional)
+
+If you want to delete the entire project directory:
+
+```bash
+cd ..
+rm -rf opencloud-compose
+```
+
+## Result
+After completing these steps, OpenCloud is fully removed, including:
+
+- All Docker containers
+
+- All persistent volumes
+
+- Any local folders and mounts
+
+- Optional project directory