Standardize CT update backup handling (#15937)

ct/nametag.sh

@@ -35,15 +35,11 @@ function update_script() {
     systemctl stop nametag
     msg_ok "Stopped Service"
 
-    msg_info "Backing up Data"
-    cp /opt/nametag/.env /opt/nametag.env.bak
-    cp -r /opt/nametag/data /opt/nametag_data_bak
-    msg_ok "Backed up Data"
+    create_backup /opt/nametag/.env /opt/nametag/data
 
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "nametag" "mattogodoy/nametag" "tarball" "latest" "/opt/nametag"
 
-    # Restore .env BEFORE the build: CLEAN_INSTALL wiped it and the build sources it
-    cp /opt/nametag.env.bak /opt/nametag/.env
+    restore_backup
 
     msg_info "Rebuilding Application"
     cd /opt/nametag
@@ -57,13 +53,6 @@ function update_script() {
     cp -r /opt/nametag/public /opt/nametag/.next/standalone/public
     msg_ok "Rebuilt Application"
 
-    msg_info "Restoring Data"
-    cp /opt/nametag.env.bak /opt/nametag/.env
-    cp -r /opt/nametag_data_bak/. /opt/nametag/data/
-    rm -f /opt/nametag.env.bak
-    rm -rf /opt/nametag_data_bak
-    msg_ok "Restored Data"
-
     msg_info "Running Migrations"
     cd /opt/nametag
     $STD npx prisma migrate deploy