Self-host d2c.sh

d2c.sh is a lightweight dynamic DNS updater written in Bash for Cloudflare. It reads TOML configuration files from /etc/d2c/ (or a custom directory) and updates existing A and AAAA records to match the machine's current public IPv4 and IPv6 addresses. The script requires yq and curl, and can be installed as a system binary, run via a locally built Docker image, or executed directly with curl | bash. It supports multiple zones and DNS records per configuration file, and can send change notifications via Gotify or Telegram Bot API. Designed to run periodically via cron or a container scheduler.