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Dockerfile

@@ -4,6 +4,7 @@ RUN apt-get update
 RUN DEBIAN_FRONTEND=noninteractive apt-get install -y -q python-all python-pip 
 ADD ./webapp/requirements.txt /tmp/requirements.txt
 RUN pip install -qr /tmp/requirements.txt
+RUN pip install python-tk
 ADD ./webapp /opt/webapp/
 WORKDIR /opt/webapp
 EXPOSE 5000

webapp/requirements.txt

@@ -1,7 +1,4 @@
 Flask
-turtle
-datetime
-python-tk
 Jinja2
 Werkzeug
 distribute