Added Dockerfile

Dockerfile

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+FROM ubuntu
+
+ARG KAGGLE_USERNAME
+ARG KAGGLE_KEY
+ARG CUTOFF
+ENV CUTOFF=${CUTOFF:-260000}
+
+WORKDIR /app
+COPY ./download_data.sh calc_stats.sh ./
+COPY ./clean_and_split_data.py calc_stats.py ./
+
+RUN apt-get update && apt-get install -y python3-pip unzip && rm -rf /var/lib/apt/lists/*
+
+RUN export PATH="$PATH:/root/.local/bin"
+
+RUN pip3 install kaggle pandas scikit-learn
+
+