simple echo websocket working

docker/Dockerfile.base

@@ -34,7 +34,10 @@ RUN apt-get -qq update \
 RUN pip3 install \
     peewee_migrate \
     zeroconf \
-    voluptuous
+    voluptuous\
+    Flask-Sockets \
+    gevent \
+    gevent-websocket
 
 COPY nginx/nginx.conf /etc/nginx/nginx.conf