Dynamic DNS updater for dy.fi

This Docker container updates dy.fi DNS entry once
per day. Update is done with curl using HTTPS.

Parameters

Define following environment variables to specify credentials and the DNS entry to be
updated:

docker run \
   -e USER=<your username at dy.fi> \
   -e PASS=<your password at dy.fi> \
   -e HOST=<hostname to update> \
   ...