chore: update .dockerignore and refactor createBackup function signature for improved readability

services/backup.service.ts

@@ -170,9 +170,7 @@ async function calculateDataHash(): Promise<string> {
 }
 
 export const backupService = {
-  async createBackup(
-    force: boolean = false,
-  ): Promise<{
+  async createBackup(force: boolean = false): Promise<{
     id: string;
     filename: string;
     size: number;