Added pip and python to install requirements in docker file

Dockerfile

@@ -1,4 +1,8 @@
 FROM node:lts-alpine3.9
-RUN apk update && apk add --no-cache bash git openssh
+RUN apk update && apk add --no-cache bash git openssh python py-pip
+
+RUN pip install --no-cache-dir -q --upgrade pip
+RUN pip install --no-cache-dir -q django-extensions pyparsing pydot
+
 COPY entrypoint.sh /entrypoint.sh
 ENTRYPOINT ["/entrypoint.sh"]

entrypoint.sh

@@ -28,7 +28,6 @@ _git_changed() {
 # PROGRAM
 echo "Installing dependencies..."
 pip install -r $INPUT_PIP_PATH
-pip install django-extensions pyparsing pydot
 echo "Creating data model..."
 python manage.py graph_models -a -g-o $INPUT_OUTPUT_PATH