GVM 20 install and setup

sudo apt-get update; sudo apt-get -y install nmap 

# Install OpenVAS, GVM
sudo add-apt-repository ppa:mrazavi/gvm -y
sudo apt-get update
sudo DEBIAN_FRONTEND=noninteractive apt-get -y install postgresql
sudo DEBIAN_FRONTEND=noninteractive apt-get -y install gvm

# Set up config file with public IP address in it
IP=$(wget -qO- https://ipinfo.io/ip)
sudo sed -i "s/127.0.0.1/$IP/g" /etc/default/gsad
sudo -u gvm -g gvm  gvmd --create-user=admin --password=admin
sudo systemctl restart gsad


# Sync feeds
sudo -u gvm -g gvm greenbone-nvt-sync
sudo -u gvm -g gvm greenbone-feed-sync --type CERT
sudo -u gvm -g gvm greenbone-feed-sync --type SCAP
sudo -u gvm -g gvm greenbone-feed-sync --type GVMD_DATA

# Restart
sudo systemctl restart ospd-openvas
sudo systemctl restart gvmd
sudo systemctl restart gsad


# Sync feeds
sudo -u gvm -g gvm greenbone-nvt-sync
sudo -u gvm -g gvm greenbone-feed-sync --type CERT
sudo -u gvm -g gvm greenbone-feed-sync --type SCAP
sudo -u gvm -g gvm greenbone-feed-sync --type GVMD_DATA

echo "Installation complete, open your admin panel at https://$IP:9392"

Please answer me? This script is used to install fresh GMV on fresh Ubuntu?