$ docker logs ec63a0d324c5
Feb 11 12:39:05 Reading random entropy from '/dev/urandom'
Feb 11 12:39:06 This is module gpgsqlbackend.so reporting
Feb 11 12:39:06 This is a standalone pdns
Feb 11 12:39:06 Listening on controlsocket in '/var/run/pdns.controlsocket'
Feb 11 12:39:06 It is advised to bind to explicit addresses with the --local-address option
Feb 11 12:39:06 UDP server bound to 0.0.0.0:53
Feb 11 12:39:06 Fatal error: Unable to convert '${PDNS_AXFR_IPS:-127.0.0.0' to a netmask
FYI:
Started with: