Update Dockerfile

Dockerfile

@@ -12,6 +12,10 @@ COPY ./requirements.txt requirements.txt
 RUN pip install --no-cache-dir --upgrade pip
 RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
+RUN which python
+RUN which pip
+RUN python --version
+RUN python -m pip install janus_swi
 RUN echo 1 | swipl pack install janus
 RUN python -c "import janus_swi as janus"