Cleaned up the settings a little bit

Author: damalis

README.md

@@ -136,7 +136,6 @@ For convenience you may add a new entry into your hosts file.
 ## Portainer
 
 ```
-docker volume create portainer_data
 docker compose -f portainer-docker-compose.yml -p portainer up -d 
 ```
 

install.sh

@@ -229,7 +229,6 @@ if [ -x "$(command -v docker)" ] && [ "$(docker compose version)" ]; then
 	if [ $? -eq 0 ]
 	then
 		# installing portainer
-		docker volume create portainer_data > /dev/null
 		docker compose -f portainer-docker-compose.yml -p portainer up -d & export pid=$!
 		echo ""
 		echo "portainer installing proceeding..."