diff --git a/ucloud-init.start b/ucloud-init.start
index 98fa428..2de19a3 100755
--- a/ucloud-init.start
+++ b/ucloud-init.start
@@ -1,9 +1,22 @@
 #!/bin/sh
 
+# Functions
+
 get_distro() {
 	OS=$(cat /etc/*release | grep ID | head -1 | cut -c 4-)
 	echo $OS
 }
+
+
+# Main Code Starts here
+
+# Some common path variable declaration
+ssh_authorized_keys_path='/root/.ssh/authorized_keys'
+ssh_config_path='/etc/ssh/ssh_config'
+sshd_config_path='/etc/ssh/sshd_config'
+
+# Check if rdnssd is installed, if not put ungleich DNS
+# into /etc/resolv.conf and install rdnssd for the next time
 if ! $(which rdnssd); then
 	echo "nameserver 2a0a:e5c0::3" >> /etc/resolv.conf
 	echo "nameserver 2a0a:e5c0::4" >> /etc/resolv.conf
@@ -11,16 +24,14 @@ if ! $(which rdnssd); then
 	apk add ndisc6
 fi
 
-# Get IPv6 DNS
+# Start rdnssd to get DNS
 rdnssd -u root -r /etc/resolv.conf
 
-ssh_authorized_keys_path='/root/.ssh/authorized_keys'
-ssh_config_path='/etc/ssh/ssh_config'
-sshd_config_path='/etc/ssh/sshd_config'
+
 # Initial Package Intallation
-if [ [ $(get_distro) = "alpine" ]; then
+if [[ $(get_distro) = "alpine" ]]; then
 	apk update
-	apk add python3 openssh-server sfdisk util-linux jq
+	apk add openssh-server sfdisk util-linux jq
 	touch $ssh_authorized_keys_path
 
 	if ! grep -q "PasswordAuthentication no" $ssh_config_path; then