Task #T556 add dockerfile for vyos-build-node

use debian:jessie docker container as build node for vyos1.2.x

Dockerfile

@@ -0,0 +1,33 @@
+# Must be run with --privileged flag
+# Recommended to run the container with a volume mapped 
+# in order to easy exprort images built to "external" world 
+FROM debian:jessie
+
+RUN apt-get update &&\
+    apt-get install -y \
+      vim \
+      git \
+      make \
+      live-build \
+      pbuilder \
+      devscripts \
+      python3-pystache \
+      squashfs-tools \
+      autoconf \
+      dpkg-dev \
+      syslinux \
+      genisoimage \
+      lsb-release \
+      fakechroot \
+      kernel-package \
+      libtool \
+      libglib2.0-dev \
+      libboost-filesystem-dev \
+      libapt-pkg-dev \
+      flex \
+      bison \
+      libperl-dev \
+      libnfnetlink-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR ~