Update installer.ts

src/installer.ts

@@ -264,8 +264,14 @@ export class DotnetCoreInstaller {
   ): Promise<string> {
     let response;
     try {
+      core.info(
+        `${DotNetCoreIndexUrl} DotNetCoreIndexUrl`
+      );
       response = await httpClient.getJson<any>(DotNetCoreIndexUrl);
     } catch (error) {
+      core.info(
+        `${DotnetCoreIndexFallbackUrl} DotnetCoreIndexFallbackUrl`
+      );
       response = await httpClient.getJson<any>(DotnetCoreIndexFallbackUrl);
     }
     const result = response.result || {};