add readme and fix docker.sh

docker.sh

@@ -8,6 +8,7 @@ get_latest() {
 	latest_image=$(docker images --format '{{.CreatedAt}}\t{{.Repository}}:{{.Tag}}' zefie/nvfp4_quant \
 	  | sort -r \
 	  | cut -f2- \
+	  | grep -v latest \
 	  | head -n 1)
 
 	if [[ -z "$latest_image" ]]; then
@@ -44,7 +45,9 @@ elif [ "${1}" == "push" ]; then
 	# push dated one first, then latest
 	"${0}" mklatest
 	IMAGE=$(get_latest)
+	echo "Pushing ${IMAGE}"
 	docker push "${IMAGE}"
+	echo "Pushing zefie/nvfp4_quant:latest"
 	docker push "zefie/nvfp4_quant:latest"
 else
 	echo "Usage: ${0} [build|run|mklatest]"