diff --git a/install/install.sh b/install/install.sh
index 64b7ea15..65243bb0 100644
--- a/install/install.sh
+++ b/install/install.sh
@@ -108,6 +108,13 @@ export tools_yum="git curl wget epel-release yum-utils jq bc unzip inotify-tools
 export tools_apt="git curl wget jq bc unzip inotify-tools"
 export docker_network="websoft9"
 export artifact_url="https://w9artifact.blob.core.windows.net/$channel/websoft9"
+# export OS release environments
+if [ -f /etc/os-release ]; then
+    . /etc/os-release
+else
+    echo "Can't judge your Linux distribution"
+    exit 1
+fi
 echo Install from url: $artifact_url
 
 # Define common functions
@@ -133,9 +140,8 @@ install_tools(){
     echo_prefix_tools=$'\n[Tools] - '
     echo "$echo_prefix_tools Starting install necessary tool..."
 
-    OS_TYPE=$(cat /etc/*-release | awk -F= '/^NAME/{print $2}' | tr -d '"')
-    if [[ $OS_TYPE == "Red Hat Enterprise Linux" ]]; then
-        RHEL_VERSION=$(rpm -E %{rhel})
+    if [ "$ID" = "rhel" ]; then
+        RHEL_VERSION=${VERSION_ID%%.*}
         sudo yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-${RHEL_VERSION}.noarch.rpm
     else
         echo "The script is only applicable to Red Hat Enterprise Linux."
diff --git a/install/install_cockpit.sh b/install/install_cockpit.sh
index 3235ff9f..54b2a66f 100644
--- a/install/install_cockpit.sh
+++ b/install/install_cockpit.sh
@@ -322,15 +322,15 @@ Install_Cockpit(){
         for pkg in $cockpit_packages
         do
             echo "Install or upgrade $pkg"
-            sudo dnf upgrade -y "$pkg"
-            sudo dnf install -y "$pkg" || echo "$pkg failed to install or upgrade"
+            sudo dnf upgrade -y "$pkg" || echo "$pkg failed to upgrade"
+            sudo dnf install -y "$pkg" || echo "$pkg failed to install"
         done
     elif [ $yum_status -eq 0 ]; then
         for pkg in $cockpit_packages
         do
             echo "Install or update $pkg"
-            sudo yum update -y "$pkg"
-            sudo yum install -y "$pkg" || echo "$pkg failed to install or update"
+            sudo yum update -y "$pkg" || echo "$pkg failed to update"
+            sudo yum install -y "$pkg" || echo "$pkg failed to install"
         done
     elif [ $apt_status -eq 0 ]; then
         export DEBIAN_FRONTEND=noninteractive
@@ -379,7 +379,6 @@ Test_Cockpit(){
 
 #### -------------- main() start here  -------------------  ####
 
-Install_PackageKit
 Set_Repository
 Install_Cockpit
 Test_Cockpit
diff --git a/install/install_docker.sh b/install/install_docker.sh
index 4ac905d4..dcc7dc98 100644
--- a/install/install_docker.sh
+++ b/install/install_docker.sh
@@ -67,12 +67,24 @@ Install_Docker(){
             curl -fsSL https://get.docker.com -o get-docker.sh
 			timeout $timeout sh get-docker.sh --channel stable --mirror $mirror
         else
-            # For other distributions(Redhat and Rocky linux)
-            sudo yum install yum-utils -y > /dev/null
-            sudo yum-config-manager --add-repo $repo_url
-            timeout $timeout sudo yum install $docker_packages -y
+            # For other distributions(Redhat and Rocky linux ...)
+            dnf --version >/dev/null 2>&1
+            dnf_status=$?
+            yum --version >/dev/null 2>&1
+            yum_status=$?
+
+            if [ $dnf_status -eq 0 ]; then
+                sudo dnf install dnf-utils -y > /dev/null
+                sudo dnf config-manager --add-repo $repo_url
+                timeout $timeout sudo dnf install $docker_packages -y
+            elif [ $yum_status -eq 0 ]; then
+                sudo yum install yum-utils -y > /dev/null
+                sudo yum-config-manager --add-repo $repo_url
+                timeout $timeout sudo yum install $docker_packages -y
+            else
+                echo "None of the required package managers are installed."
+            fi                
         fi
-    fi
 
     # For Ubuntu, Debian, or Raspbian
     if type apt >/dev/null 2>&1; then
diff --git a/install/install_plugins.sh b/install/install_plugins.sh
index aafea4a0..2d35bbf1 100644
--- a/install/install_plugins.sh
+++ b/install/install_plugins.sh
@@ -52,6 +52,15 @@ versions_url="$source_github_pages/version.json"
 file_suffix=".zip"
 plugin_path="/usr/share/cockpit"
 
+if ! command -v python3 &> /dev/null
+then
+    echo "Python 3 is not installed. Installing..."
+    sudo yum install -y python3 &> /dev/null || sudo apt update -y  && sudo apt install -y python3 &> /dev/null
+else
+    echo "Python 3 is already installed."
+fi
+
+
 echo "$echo_prefix_plugins Starting download plugin and update it"
 
 python3 - << END