run an as user, not root

Dockerfile

@@ -8,6 +8,9 @@ RUN apt-get update && apt-get install -y \
     git \
     && rm -rf /var/lib/apt/lists/*
 
+# Create a non-root user
+RUN useradd --create-home --shell /bin/bash appuser
+
 COPY requirements.txt ./
 COPY src/ ./src/
 COPY faiss_index/ ./faiss_index/
@@ -17,6 +20,12 @@ COPY .streamlit/ ./.streamlit/
 
 RUN pip3 install -r requirements.txt
 
+# Change ownership of the app directory to the appuser
+RUN chown -R appuser:appuser /app
+
+# Switch to the non-root user
+USER appuser
+
 EXPOSE 8501
 
 HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health