Fixup dockerfile, requirements, upgrade android gradle.

I'll merge this stuff in tracking for now, as there's some other stuff I'm working on and want these latest changes in.

pycar/Dockerfile

@@ -1,4 +1,7 @@
-FROM python:3.6-slim
+FROM vato.ddns.net:8083/python:3
+
+ARG PYPI_USERNAME
+ARG PYPI_PASSWORD
 
 RUN apt-get update
 # OpenCV has a LOT of dependencies.
@@ -17,14 +20,14 @@ RUN apt-get install -y \
     && rm -rf /var/lib/apt/lists/*
 
 COPY requirements.txt /
-RUN pip install --trusted-host pypi.python.org -r requirements.txt
+RUN pip install --index-url https://${PYPI_USERNAME}:${PYPI_PASSWORD}@vato.ddns.net/nexus/repository/pypi-grouped/simple -r requirements.txt
 
 WORKDIR /app
 
-COPY . /app
+COPY ./src /app
 
 # We aren't listening, just connecting, so probs won't need this.
 # EXPOSE 1883
 ENV PYTHONPATH=/app
 
-CMD ["python", "DecisionSystem/CentralisedDecision/cameraserver.py", "-V", "/app/HandRecognitionMacbookFixed.mp4"]
+CMD ["python", "-m", "car"]