Resolution control via MQTT

Change-Id: I3a98f19fac8a34098703c7bdf60e1e17f644a635
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 12d5c52..b3d5835 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -17,6 +17,9 @@
 
 RUN apt-get install -y libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgstreamer-plugins-bad1.0-dev gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav gstreamer1.0-doc gstreamer1.0-tools gstreamer1.0-x gstreamer1.0-alsa gstreamer1.0-gl gstreamer1.0-gtk3 gstreamer1.0-qt5 gstreamer1.0-pulseaudio
 
+# TODO - is this needed?
+RUN pip3 install paho-mqtt
+
 WORKDIR /var/person-detection-app
 
 COPY . .