sudo apt-get update
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:certbot/certbot
sudo apt-get update
sudo apt-get install certbot python-pip
pip install certbot-dns-cloudflare
sudo certbot certonly --dns-cloudflare --dns-cloudflare-credentials ~/.secrets/certbot/cloudflare.ini --server https://acme-v02.api.letsencrypt.org/directory --email email@example.com --agree-tos -d *.example.com