diff --git a/main.sh b/main.sh
index 73125ac..6bf8911 100755
--- a/main.sh
+++ b/main.sh
@@ -142,9 +142,11 @@ ebpf() {
 }
 
 containerruntime() {
+	echo start install container runtime as docker
 	isUbuntu=$(grep -c Ubuntu /etc/os-release)
 	if [ "$isUbuntu" -gt 0 ]; then
 		# Add Docker's official GPG key:
+		echo install docker with apt
 		sudo apt-get update -y
 		sudo apt-get install ca-certificates curl gnupg -y
 		install -m 0755 -d /etc/apt/keyrings
@@ -158,9 +160,9 @@ containerruntime() {
 		apt-get update -y
 		apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin -y
 	else
-		sudo dnf -y install dnf-plugins-core
-		sudo dnf config-manager --add-repo https://download.docker.com/linux/fedora/docker-ce.repo
-		sudo dnf install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
+		sudo yum install -y yum-utils
+		sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
+		sudo yum install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin -y
 	fi
 }