message: Add libzmq dep into RHEL dockerfile.
diff: @@ -58,6 +58,15 @@ RUN cd /usr/src && \
  RUN yum install -y ncurses-devel
  +RUN cd /tmp && \
  + wget https://github.com/zeromq/libzmq/releases/download/v4.2.2/zeromq-4.2.2.tar.gz && \
  + tar xfz zeromq-4.2.2.tar.gz && rm zeromq-4.2.2.tar.gz && \
  + cd /tmp/zeromq-4.2.2 && \
  + ./configure && \
  + make && \
  + make install && \
  + rm -rf /tmp/zeromq-4.2.2
  +
  RUN useradd -ms /bin/bash -u $uid indy
  USER indy
  