Fix style of Dockerfile

docker/Dockerfile

@@ -1,23 +1,23 @@
 FROM debian:stretch
 
 RUN	apt-get update \
-&&	apt-get install -y --no-install-recommends gnupg dirmngr curl \
-&&	curl -fsSL http://rspamd.com/apt-stable/gpg.key | apt-key add - \
-&&	apt-get purge -y --auto-remove curl \
-&&	rm -rf /var/lib/apt/lists/*
+	&& apt-get install -y --no-install-recommends gnupg dirmngr curl \
+	&& curl -fsSL http://rspamd.com/apt-stable/gpg.key | apt-key add - \
+	&& apt-get purge -y --auto-remove curl \
+	&& rm -rf /var/lib/apt/lists/*
 
-RUN echo "deb http://rspamd.com/apt-stable/ stretch main" > /etc/apt/sources.list.d/rspamd.list
+RUN	echo "deb http://rspamd.com/apt-stable/ stretch main" > /etc/apt/sources.list.d/rspamd.list
 
 RUN	apt-get update \
-&&	apt-get install -y rspamd \
-&&	rm -rf /var/lib/apt/lists/*
+	&& apt-get install -y rspamd \
+	&& rm -rf /var/lib/apt/lists/*
 
 RUN	echo 'type = "console";' > /etc/rspamd/override.d/logging.inc \
-&&	echo 'bind_socket = "*:11334";' > /etc/rspamd/override.d/worker-controller.inc \
-&&	echo 'pidfile = false;' > /etc/rspamd/override.d/options.inc
+	&& echo 'bind_socket = "*:11334";' > /etc/rspamd/override.d/worker-controller.inc \
+	&& echo 'pidfile = false;' > /etc/rspamd/override.d/options.inc
 
 VOLUME	[ "/var/lib/rspamd" ]
 
 CMD	[ "/usr/bin/rspamd", "-f", "-u", "_rspamd", "-g", "_rspamd" ]
 
-EXPOSE 11333 11334
+EXPOSE	11333 11334