Fix dovecot for Docker

data/Dockerfiles/dovecot/Dockerfile

@@ -0,0 +1,38 @@
+From ubuntu:xenial
+MAINTAINER Andre Peters <andre.peters@servercow.de>
+
+ENV DEBIAN_FRONTEND noninteractive
+
+RUN apt-get update \
+	&& apt-get -y install dovecot-common \
+		dovecot-core \
+		dovecot-imapd \
+		dovecot-lmtpd \
+		dovecot-managesieved \
+		dovecot-sieve \
+		dovecot-mysql \
+		dovecot-pop3d \
+		dovecot-dev \
+		wget \
+		curl \
+		build-essential \
+		autotools-dev \
+		automake
+
+WORKDIR /tmp
+RUN wget http://hg.dovecot.org/dovecot-antispam-plugin/archive/tip.tar.gz -O - | tar xvz  \
+	&& cd /tmp/dovecot-antispam* \
+	&& ./autogen.sh \
+	&& ./configure --prefix=/usr \
+	&& make \
+	&& make install
+
+ADD rspamd-pipe /usr/local/bin/rspamd-pipe
+
+RUN chmod +x /usr/local/bin/rspamd-pipe
+RUN groupadd -g 5000 vmail
+RUN useradd -g vmail -u 5000 vmail -d /var/vmail
+
+EXPOSE 24 10001
+
+CMD ["/usr/sbin/dovecot", "-F"]