Update Dockerfile

Dockerfile

@@ -1,7 +1,7 @@
 FROM swipl
 
 RUN apt-get update
-RUN apt-get install -y gcc python3-all python3-dev
+RUN apt-get install -y gcc python3-all python3-dev python3-venv
 
 WORKDIR /app
 COPY . /app
@@ -15,4 +15,4 @@ RUN python -c "import janus_swi as janus"
 
 EXPOSE 7860
 ENV GRADIO_SERVER_NAME="0.0.0.0"
-CMD ["python", "app.py"]
+CMD ["source", "env\Scripts\activate;", "python", "app.py"]