-e UPDATE_IP=ipv4 `# optional` `# Set to `ipv6` or `ipv4` to update **only** your public IPv4/6 address. Set to `both` to update IPv6 and IPv4 address. This variable makes use of a [third-party service](#notice-regarding-automatic-detection). Omitting this variable uses DuckDNS for detection and only supports IPv4. `both` and `ipv6` modes needs [host networking](#networking-net).` \
-e LOG_FILE=false`# optional` `# Set to `true` to log to file (also need to map /config).` \
-v ${BASEDIR:-/volume1/docker}/duckdns/config:/config `# optional` `# Used in conjunction with logging to file.` \