First working version

docker-compose.yml

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+pdns:
+  build: pdns
+  links:
+    - "mysql:mysql"
+  ports:
+    - "53:53"
+    - "53:53/udp"
+  #environment:
+  #  - PDNS_RECURSIVE_CACHE_TTL=10
+mysql:
+  image: mysql
+  environment:
+    - MYSQL_ROOT_PASSWORD=mysqlrootpw
+    - MYSQL_DATABASE=pdns
+    - MYSQL_USER=pdns
+    - MYSQL_PASSWORD=pdnspw
+

pdns/Dockerfile

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+FROM debian:jessie
+MAINTAINER Fabio Rauber <fabiorauber@gmail.com>
+
+ENV DEBIAN_FRONTEND="noninteractive" 
+
+RUN apt-get update && \
+    apt-get install -q -y pdns-server pdns-backend-mysql mysql-client && \
+    apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+EXPOSE 53/udp 53/tcp
+
+ADD start.sh /usr/local/bin/start.sh
+RUN chmod a+x /usr/local/bin/start.sh
+
+CMD ["/usr/local/bin/start.sh"]

pdns/pdns.conf

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+launch=gmysql
+gmysql-dnssec=yes
+gmysql-host=db
+gmysql-user=dnsaas
+gmysql-dbname=dnsaas
+gmysql-password=dnsaas
+query-cache-ttl=0
+cache-ttl=0
+slave=yes
+experimental-json-interface=yes
+experimental-api-key=your-powerdns-api-key
+webserver=yes

pdns/start.sh

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+#!/bin/bash
+
+mkdir -p /etc/powerdns
+
+cat >/etc/powerdns/pdns.conf <<EOF
+# MySQL Configuration
+#
+# Launch gmysql backend
+launch=gmysql
+# gpgsql parameters
+gmysql-host=mysql
+gmysql-user=$MYSQL_ENV_MYSQL_USER
+gmysql-dbname=$MYSQL_ENV_MYSQL_DATABASE
+gmysql-password=$MYSQL_ENV_MYSQL_PASSWORD
+gmysql-dnssec=yes
+EOF
+
+mysqlcheck() {
+  # Wait for MySQL to be available...
+  COUNTER=20
+  until mysql -h mysql -u $MYSQL_ENV_MYSQL_USER -p$MYSQL_ENV_MYSQL_PASSWORD -e "show databases" 2>/dev/null; do
+    echo "WARNING: MySQL still not up. Trying again..."
+    sleep 10
+    let COUNTER-=1
+    if [ $COUNTER -lt 1 ]; then
+      echo "ERROR: MySQL connection timed out. Aborting."
+      exit 1
+    fi
+  done
+
+  count=`mysql -h mysql -u $MYSQL_ENV_MYSQL_USER -p$MYSQL_ENV_MYSQL_PASSWORD -e "select count(*) from information_schema.tables where table_type='BASE TABLE' and table_schema='$MYSQL_ENV_MYSQL_DATABASE';" | tail -1`
+  if [ "$count" == "0" ]; then
+    echo "Database is empty. Importing PowerDNS schema..."
+    mysql -h mysql -u $MYSQL_ENV_MYSQL_USER -p$MYSQL_ENV_MYSQL_PASSWORD $MYSQL_ENV_MYSQL_DATABASE < /usr/share/doc/pdns-backend-mysql/schema.mysql.sql && echo "Import done."
+  fi
+}
+
+mysqlcheck
+
+# Start PowerDNS
+# same as /etc/init.d/pdns monitor
+echo "Starting PowerDNS..."
+
+if [ "$#" -gt 0 ]; then
+  exec /usr/sbin/pdns_server "$@"
+else
+  exec /usr/sbin/pdns_server --daemon=no --guardian=no --control-console --loglevel=9
+fi