Add package sources to the packageSourceMapping tag.

.github/workflows/dotnet-core.yml

@@ -78,7 +78,7 @@ jobs:
   
 
   build_release:
-    # Ensure that RELEASE builds are not broken  
+    # Ensure that RELEASE builds are not broken
     runs-on: ubuntu-latest
     steps:
     - name: Checkout code

nuget.config

@@ -16,5 +16,11 @@
     <packageSource key="nuget">
       <package pattern="*" />
     </packageSource>
+	<packageSource key="LocalPackages">
+	 <package pattern="*" />
+	</packageSource>
+	<packageSource key="local_packages">
+	 <package pattern="*" />
+	</packageSource>
   </packageSourceMapping>
 </configuration>