Remove build hack, build using normal make script.

Dockerfile

 FROM centos:centos7
 MAINTAINER Jørn Åne de Jong <jorn.dejong@uninett.no>
-RUN yum -y install tar make ruby-devel rubygems gcc rpm-build autoconf
+RUN yum -y install tar make ruby-devel rubygems gcc rpm-build autoconf libcap-devel
 RUN gem install fpm
 ADD rude /usr/src/rude
 WORKDIR /usr/src/rude
-RUN yum -y install libpcap-devel
 RUN autoheader autoconf/configure.in
 RUN autoconf autoconf/configure.in > configure
 RUN chmod 755 configure
 RUN ./configure --enable-wall --with-debug-lvl=3
-RUN make || { cd crude; gcc -O2 -Wall -I../include -lm  -DHAVE_CONFIG_H  -o crude main.o ../rude/mcast.o -lpcap; }
 RUN make rpm deb
 CMD tar c rude/rude{,.8} rude/rude*.{rpm,deb} crude/crude{,.8} crude/crude*.{rpm,deb}

rude @ ba4bd438

-Subproject commit 5b7a2e342ae7c5d5dafeed95cd0f03126a492edb
+Subproject commit ba4bd438c53eb746e182719128ce25fccd8fb703