added libs

Dockerfile

@@ -11,7 +11,7 @@ ENV PYTHONUNBUFFERED 1
 # This is where your application's code will live.
 WORKDIR /app
 
-# RUN apt-get update && apt-get install -y libgl1
+RUN apt-get update && apt-get install -y libgl1
 
 # Copy the requirements file into the container at /app.
 # This is done as a separate step to take advantage of Docker's layer caching.