Dockerfile is needed to build a image

Dockerfile

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+FROM python:3.9-slim
+
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    curl \
+    software-properties-common \
+    git \
+    && rm -rf /var/lib/apt/lists/*
+
+# copy the application files
+COPY . /app
+WORKDIR /app
+
+RUN python3 -m pip install -r requirements.txt
+
+EXPOSE 8501
+
+HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health
+
+ENTRYPOINT [ "streamlit run explanation_frontend.py --server.port=8501 --server.address=0.0.0.0" ]