updated backend

backend/Dockerfile

@@ -45,7 +45,7 @@ RUN cd /tmp && git clone https://github.com/piface/libmcp23s17 && cd libmcp23s17
 
 RUN cd /tmp && git clone https://github.com/piface/libpifacedigital && cd libpifacedigital && make && make install && cd / && rm /tmp/libpifacedigital -rf
 
-RUN cd /tmp && git clone https://git.rthoni.com/camotion/piface && cd piface && make && make install && cd / && rm /tmp/piface -rf
+RUN cd /tmp && git clone https://git.rthoni.com/camotion/piface && cd piface && git checkout v1.1.1 && make && make install && cd / && rm /tmp/piface -rf
 
 RUN groupadd -g "${SPI_USER_UID}" spi && usermod -a -G spi www-data
 

backend/backend

@@ -1 +1 @@
-Subproject commit 9b7a58d319483c6612a2d609978b9d5dc68458d4
+Subproject commit 84397bb8f599ae8214cad559c23c67151a31affc