Added Docker file used for CI images.

ciimage/Dockerfile

@@ -0,0 +1,11 @@
+FROM ubuntu:zesty
+
+RUN apt-get -y update && apt-get -y upgrade \
+&& apt-get -y install git wget unzip \
+&& apt-get -y build-dep meson \
+&& apt-get -y install qt5-default itstool clang libgtk-3-dev \
+&& apt-get -y install pkg-config-arm-linux-gnueabihf g++-6-arm-linux-gnueabihf \
+&& apt-get -y install valgrind doxygen \
+&& apt-get -y install llvm libsdl2-dev \
+&& apt-get -y install python3-pip libxml2-dev libxslt1-dev cmake libyaml-dev \
+&& python3 -m pip install hotdoc codecov