name: Dynamic DNS services: duckdns: image: linuxserver/duckdns environment: - SUBDOMAINS=${NASCOMPOSE_DUCKDNS_DOMAIN?} - FILE__TOKEN=/run/secrets/duckdns_token secrets: - duckdns_token restart: unless-stopped secrets: duckdns_token: file: ${NASCOMPOSE_SERVICES?}/dynamic-dns/secrets/duckdns_token