Update Dockerfile

Dockerfile

@@ -1,26 +1,30 @@
 FROM python:3.9-slim
 
 WORKDIR /app
-# Ensure Streamlit can write its installation_id, metrics, etc.
-RUN mkdir -p /root/.streamlit \
-    && chown -R 1000:1000 /root/.streamlit \
-    && chmod -R a+rwX        /root/.streamlit
 
+# Create and permission the general application cache directory
 RUN mkdir -p /app/.cache_app && \
     chown -R 1000:1000 /app/.cache_app && \
     chmod -R u+rwx,g+rwx /app/.cache_app
 
+# --- V V V STREAMLIT PERMISSION FIXES V V V ---
+# 1. For user-level Streamlit configurations (good practice)
 ENV STREAMLIT_HOME=/app/.streamlit_config
-# Create and set permissions for Streamlit's configuration directory
 RUN mkdir -p ${STREAMLIT_HOME} && \
     chown -R 1000:1000 ${STREAMLIT_HOME} && \
     chmod -R u+rwx,g+rwx ${STREAMLIT_HOME}
-# --- ^ ^ ^ END OF STREAMLIT PERMISSION FIX ^ ^ ^ ---
 
-# Set TOKENIZERS_PARALLELISM to false to avoid warnings (optional but good practice)
+# 2. For the problematic root-level /.streamlit directory (direct fix for the error)
+RUN mkdir -p /.streamlit && \
+    chmod -R 777 /.streamlit 
+# This creates /.streamlit during build (owned by root) and makes it world-writable.
+# --- ^ ^ ^ END OF STREAMLIT PERMISSION FIXES ^ ^ ^ ---
+
+# Set TOKENIZERS_PARALLELISM to false to avoid warnings
 ENV TOKENIZERS_PARALLELISM=false
 
-RUN apt-get update && apt-get install -y \
+# Install system dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
     build-essential \
     cmake \
     curl \
@@ -28,13 +32,19 @@ RUN apt-get update && apt-get install -y \
     git \
     && rm -rf /var/lib/apt/lists/*
 
+# Copy requirements file and install Python dependencies
+# (Installing requirements before copying all app code improves Docker layer caching)
 COPY requirements.txt ./
-COPY src/ ./src/
+RUN pip3 install --no-cache-dir -r requirements.txt
 
-RUN pip3 install -r requirements.txt
+# Copy your application source code
+COPY src/ ./src/
 
+# Expose the port Streamlit will run on
 EXPOSE 8501
 
+# Healthcheck
 HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health
 
+# Entrypoint to run your Streamlit application
 ENTRYPOINT ["streamlit", "run", "src/streamlit_app.py", "--server.port=8501", "--server.address=0.0.0.0", "--server.fileWatcherType", "none"]