convert repository name to lowercase for ci

Author: HasanJaved-Developer

.github/workflows/docker-compose-ci.yml

@@ -34,4 +34,4 @@ jobs:
           push: true
           tags: |
             ${{ secrets.DOCKERHUB_USERNAME }}/centralized-logging:latest
-            ghcr.io/${{ github.repository_owner }}/centralized-logging:latest
+            ghcr.io/${{ github.repository_owner,, }}/centralized-logging:latest