- Dockerfile cleanups

Dockerfile

@@ -8,16 +8,16 @@ MAINTAINER Dinko Korunic <dinko.korunic@gmail.com>
 RUN apt-get update && apt-get install -y build-essential git-core
 
 # install hybserv2
-RUN mkdir -p /root/src
-RUN git clone https://github.com/dkorunic/hybserv2.git /root/src/hybserv2
-RUN cd /root/src/hybserv2 && ./configure --enable-daemontools && make all install
-RUN useradd --system hybserv
-RUN chown -Rh hybserv: /usr/local/hybserv
-
-# clean cruft
-RUN rm -rf /root/src
-RUN apt-get -y purge build-essential git-core fakeroot libfakeroot patch cpp make binutils libc-dev-bin libc6-dev linux-libc-dev manpages
-RUN apt-get -y autoremove
+RUN mkdir -p /root/src \
+    && git clone https://github.com/dkorunic/hybserv2.git /root/src/hybserv2 \
+    && cd /root/src/hybserv2 && ./configure --enable-daemontools \
+    && make all install \
+    && useradd --system hybserv \
+    && chown -Rh hybserv: /usr/local/hybserv \
+    && rm -rf /root/src \
+    && apt-get -y purge build-essential git-core fakeroot libfakeroot patch cpp make binutils libc-dev-bin libc6-dev linux-libc-dev manpages \
+    && apt-get -y autoremove \
+    && rm -rf /var/lib/apt/lists/*
 
 # add volumes
 VOLUME ["/usr/local/hybserv"]