Update Dockerfile

Dockerfile

@@ -1,22 +1,24 @@
 FROM python:3.9-slim
 
+# Set working directory
 WORKDIR /app
 
-# Set a safe HOME and streamlit config directory
+# Set safe home and Streamlit config path
 ENV HOME=/app
 ENV STREAMLIT_HOME=/app/.streamlit
 
+# Install dependencies
 RUN apt-get update && apt-get install -y \
     build-essential \
     curl \
-    software-properties-common \
     git \
     && rm -rf /var/lib/apt/lists/*
 
+# Copy files
 COPY requirements.txt ./
 COPY src/ ./src/
 
-# Create .streamlit directory and basic config
+# Create .streamlit directory and config files before install
 RUN mkdir -p $STREAMLIT_HOME && \
     echo "\
 [server]\n\
@@ -26,12 +28,17 @@ enableCORS = false\n\
 \n\
 [theme]\n\
 base = 'light'\n\
-" > $STREAMLIT_HOME/config.toml
+" > $STREAMLIT_HOME/config.toml && \
+    touch $STREAMLIT_HOME/machine_id_v4  # ensure file exists
 
-RUN pip3 install -r requirements.txt
+# Install Python dependencies
+RUN pip3 install --no-cache-dir -r requirements.txt
 
+# Expose port
 EXPOSE 8501
 
+# Health check
 HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health
 
+# Entrypoint to run app
 ENTRYPOINT ["streamlit", "run", "src/streamlit_app.py", "--server.port=8501", "--server.address=0.0.0.0"]