To use blah.<mydomain> for ddns, <mydomain> should be registered to cloudflare
pip install requests
export CF_EMAIL=<your_cloudflare_email>
export CF_APIKEY=<your_cloudflare_apikey>
export CF_DDNS_DOMAIN=<domain_for_ddns>
python ddns.py
docker run -e CF_EMAIL=<your_cloudflare_email> \
-e CF_APIKEY=<your_cloudflare_apikey> \
-e CF_DDNS_DOMAIN=<domain_for_ddns> \
-d tee0125/cloudflare-ddns