attempt rpiplay fixes 2

balena.yml

@@ -43,4 +43,4 @@ data:
     - BALENA_HOST_CONFIG_gpu_mem: 256
     - BALENA_HOST_CONFIG_gpu_mem_512: 128
     - BALENA_HOST_CONFIG_dtoverlay: vc4-fkms-v3d
-version: 1.0.11
+version: 1.0.12

rpiplay/Dockerfile

@@ -1,12 +1,14 @@
 FROM balenalib/rpi-raspbian:buster AS builder
 
-RUN install_packages apt-utils cmake \
+RUN install_packages apt-utils cmake python python-dev \
                      libavahi-compat-libdnssd-dev libplist-dev libssl-dev \
                      build-essential\
                      git
 
 RUN install_packages libraspberrypi-dev libraspberrypi-doc
 
+RUN python -m ensurepip --upgrade
+
 RUN pip install wheel
 
 WORKDIR /usr/src/app/