fixes generated image download

src/app/services/mobile-build.service.ts

@@ -81,10 +81,10 @@ export class MobileBuildService {
     );
   }
 
-  downloadArtifact(artifactId: number): Observable<Blob> {
-    return this.http.get(
-      `${this.baseUrl}/artifacts/${artifactId}/download`,
-      { responseType: 'blob' },
+  getDownloadUrl(artifactId: number): Observable<{ download_url: string }> {
+    return this.http.get<{ download_url: string }>(
+      `${this.baseUrl}/artifacts/${artifactId}/download-url`,
     );
   }
+
 }