Importing into a fresh repository.

+FROM docker.brainfood.com/php5-fpm
+
+ADD /overlay/ /
+
+RUN /tmp/build/preseed.sh
+
+RUN ["apt-docker", \
+	"-y", "install", "-t", "jessie-backports", "dbconfig-common", "roundcube-mysql", "roundcube-plugins", "roundcube", "php5-mysql", "apache2-", \
+	";" ]

+version: '2'
+
+services:
+        build:
+                image: docker.brainfood.com/roundcube
+                build:
+                        context: .
+                        args:
+                                - http_proxy
+                                - https_proxy
+                ports:
+                        - 9000

+[roundcube]
+
+include = /etc/php5/fpm/app-defaults.conf
+prefix = /var/lib
+
+; Unix user/group of processes
+; Note: The user is mandatory. If the group is not set, the default user's group
+;       will be used.
+user = www-data
+group = www-data

+#!/bin/sh
+
+set -e
+debconf-set-selections < /tmp/build/roundcube.preseed
+rm /tmp/build/preseed.sh /tmp/build/roundcube.preseed
+rmdir /tmp/build 2>/dev/null || true

+roundcube-core	roundcube/mysql/method	select	tcp/ip
+roundcube-core	roundcube/dbconfig-reinstall	boolean	false
+roundcube-core	roundcube/purge	boolean	false
+roundcube-core	roundcube/language	select	en_US
+roundcube-core	roundcube/restart-webserver	boolean	false
+roundcube-core	roundcube/install-error	select	ignore
+roundcube-core	roundcube/mysql/admin-user	string	root
+roundcube-core	roundcube/database-type	select	mysql
+roundcube-core	roundcube/internal/skip-preseed boolean true
+
+
+roundcube-core	roundcube/remote/newhost	string	mysql-server
+roundcube-core	roundcube/remote/port	string	3306
+roundcube-core	roundcube/remote/host	select	mysql-server
+roundcube-core	roundcube/db/app-user	string	roundcube
+roundcube-core	roundcube/db/dbname	string	roundcube
+roundcube-core	roundcube/hosts	string	mail