Update Dockerfile

Dockerfile

@@ -20,17 +20,19 @@ WORKDIR /app
 COPY --from=build-stage /usr/local/lib/python3.9/site-packages /usr/local/lib/python3.9/site-packages
 COPY --from=build-stage /usr/local/bin /usr/local/bin
 
+# Add non-root user and switch to it for better security
+RUN useradd -m flaskuser
+
 # Copy application code
 COPY . /app
 
-# Change ownership of /app to flaskuser
+# Change ownership of /app to flaskuser after user is created
 RUN chown -R flaskuser:flaskuser /app
 
 # Remove pip cache and unnecessary files (optional)
 RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
-# Add non-root user and switch to it for better security
-RUN useradd -m flaskuser
+# Switch to the non-root user
 USER flaskuser
 
 # Expose the port your Flask app will run on