Simplify Dockerfile and add minimal test app

Dockerfile

@@ -1,10 +1,5 @@
-# Read the doc: https://huggingface.co/docs/hub/spaces-sdks-docker
-FROM python:3.11-slim
-
-# Install system dependencies
-RUN apt-get update && apt-get install -y \
-    ffmpeg \
-    && rm -rf /var/lib/apt/lists/*
+# Simple Dockerfile for Hugging Face Spaces
+FROM python:3.9-slim
 
 # Set up a new user named "user" with user ID 1000
 RUN useradd -m -u 1000 user
@@ -17,23 +12,16 @@ ENV HOME=/home/user \
     PATH=/home/user/.local/bin:$PATH
 
 # Set the working directory
-WORKDIR $HOME/app
-
-# Copy requirements first for better caching
-COPY --chown=user requirements.txt .
-RUN pip install --no-cache-dir --upgrade -r requirements.txt
+WORKDIR /app
 
-# Copy the rest of the application
-COPY --chown=user . .
-
-# Set environment variables
-ENV PYTHONUNBUFFERED=1 \
-    PYTHONDONTWRITEBYTECODE=1 \
-    PORT=7860
+# Install streamlit
+RUN pip install --no-cache-dir streamlit
 
 # Expose the port Streamlit will run on
 EXPOSE 7860
 
-# Command to run the application
-# Use test_app.py for initial diagnostics, then switch to main.py
-CMD ["streamlit", "run", "--server.port", "7860", "--server.address", "0.0.0.0", "test_app.py"]
+# Copy the simple test file
+COPY --chown=user simple_test.py /app/
+
+# Command to run the simple test app
+CMD ["streamlit", "run", "--server.port", "7860", "--server.address", "0.0.0.0", "simple_test.py"]

simple_test.py

@@ -0,0 +1,17 @@
+import streamlit as st
+
+st.title("Simple Test App")
+st.write("If you can see this, the app is working!")
+st.write("This is a minimal test to verify Streamlit functionality.")
+
+# Display some basic system info
+import sys
+import platform
+
+st.subheader("System Information")
+st.write(f"Python version: {sys.version}")
+st.write(f"Platform: {platform.platform()}")
+
+# Add a simple interactive element
+if st.button("Click me!"):
+    st.success("Button clicked!")