feat: preserve database across deployments

- Added database backup before deployment
- Added database restore after deployment
- Set correct ownership on restored database

deploy.sh

@@ -32,12 +32,23 @@ echo "=== Deploying to Raspberry Pi ==="
 ssh $SSH_OPTS gatekeeper@dlbGatekeeper << 'EOF'
 set -e
 
+echo "=== Backing up database ==="
+cd /home/gatekeeper
+if [ -f "/home/gatekeeper/gatekeeper/backend/gatekeeper.db" ]; then
+    sudo cp /home/gatekeeper/gatekeeper/backend/gatekeeper.db /home/gatekeeper/gatekeeper.db.backup
+fi
+
 echo "=== Extracting deployment files ==="
 cd /home/gatekeeper
 sudo rm -rf /home/gatekeeper/gatekeeper
 sudo mkdir -p /home/gatekeeper/gatekeeper
 sudo tar xzf gatekeeper.tar.gz -C /home/gatekeeper/gatekeeper
 
+echo "=== Restoring database ==="
+if [ -f "/home/gatekeeper/gatekeeper.db.backup" ]; then
+    sudo mv /home/gatekeeper/gatekeeper.db.backup /home/gatekeeper/gatekeeper/backend/gatekeeper.db
+fi
+
 echo "=== Cleaning up ==="
 rm gatekeeper.tar.gz
 EOF