Renew cert behind cloudflare

First, create a file (chmod 600) with:

# Cloudflare API credentials used by Certbot
dns_cloudflare_email = [email protected]
dns_cloudflare_api_key = xxx

Then, launch cerbot renew (remove --dry-run)

certbot certonly --dry-run --dns-cloudflare --dns-cloudflare-credentials ~/.config/cloudflare/api.ini -d domaine.com -d www.domaine.com