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@@ -1,20 +1,27 @@
-FROM python:3.13.5-slim
 
-WORKDIR /app
+# Fill in the base image with the correct Python version (e.g., python:3.9)
+FROM python:3.9
+
+# Fill in the username to be created (e.g., user)
+RUN useradd -m -u 1000 user
 
-RUN apt-get update && apt-get install -y \
-    build-essential \
-    curl \
-    git \
-    && rm -rf /var/lib/apt/lists/*
+# Blank #3: Specify the username for subsequent commands (e.g., user)
+USER user
 
-COPY requirements.txt ./
-COPY src/ ./src/
+# Fill in the username in the PATH environment variable (e.g., user)
+ENV PATH="/home/user/.local/bin:$PATH"
+
+# Set working directory
+WORKDIR /app
 
-RUN pip3 install -r requirements.txt
+# Use the same username for file ownership when copying requirements (e.g., user)
+COPY --chown=user ./requirements.txt requirements.txt
+RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
-EXPOSE 8501
+# Use the same username for file ownership when copying the app files (e.g., user)
+COPY --chown=user . /app
 
-HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health
+# Start the Streamlit app on port 7860, the default port expected by Spaces
+CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0"]
 
-ENTRYPOINT ["streamlit", "run", "src/streamlit_app.py", "--server.port=8501", "--server.address=0.0.0.0"]
+# Reference: https://huggingface.co/docs/hub/en/spaces-sdks-docker