Update Dockerfile

Dockerfile

@@ -2,6 +2,7 @@ FROM python:3.9-slim
 
 WORKDIR /app
 
+# Install system dependencies as root
 RUN apt-get update && apt-get install -y \
     build-essential \
     curl \
@@ -9,13 +10,24 @@ RUN apt-get update && apt-get install -y \
     git \
     && rm -rf /var/lib/apt/lists/*
 
+# Copy and install python requirements as root
 COPY requirements.txt ./
+RUN pip3 install -r requirements.txt
+
+# Copy application code
 COPY src/ ./src/
 
-RUN pip3 install -r requirements.txt
+# Create a non-root user and its home directory, then change ownership of the app directory.
+# The -m flag is crucial as it creates the home directory (/home/appuser),
+# allowing Streamlit to create its /.streamlit directory there instead of in the root.
+RUN useradd -ms /bin/bash appuser && chown -R appuser:appuser /app
+
+# Switch to the non-root user
+USER appuser
 
 EXPOSE 8501
 
 HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health
 
+# This command will now be executed by 'appuser'
 ENTRYPOINT ["streamlit", "run", "src/streamlit_app.py", "--server.port=8501", "--server.address=0.0.0.0"]