Update to use Docker Hub registry

- Change from Quay.io to Docker Hub (andersonid/openshift-resource-governance)
- Update GitHub Actions to use DOCKERHUB_USERNAME and DOCKERHUB_TOKEN
- Update all scripts and documentation to use Docker Hub
- Add DOCKERHUB-SETUP.md with detailed setup instructions
- Update Makefile, deploy scripts, and templates
- Simplify registry references (no quay.io prefix needed)

scripts/deploy.sh

@@ -14,7 +14,7 @@ NC='\033[0m' # No Color
 NAMESPACE="resource-governance"
 IMAGE_NAME="resource-governance"
 TAG="${1:-latest}"
-REGISTRY="${2:-quay.io/openshift}"
+REGISTRY="${2:-andersonid}"
 FULL_IMAGE_NAME="${REGISTRY}/${IMAGE_NAME}:${TAG}"
 
 echo -e "${BLUE}🚀 Deploying OpenShift Resource Governance Tool${NC}"