Update Dockerfile

Dockerfile

@@ -1,20 +1,38 @@
 FROM python:3.13.5-slim
 
+# Avoid interactive tzdata prompts and keep logs unbuffered
+ENV DEBIAN_FRONTEND=noninteractive \
+    PYTHONUNBUFFERED=1 \
+    PIP_NO_CACHE_DIR=1 \
+    # Make Streamlit write to a writable place (fixes '/.streamlit' permission error)
+    HOME=/app \
+    XDG_CONFIG_HOME=/app/.config \
+    STREAMLIT_CONFIG_DIR=/app/.streamlit \
+    STREAMLIT_BROWSER_GATHER_USAGE_STATS=false
+
 WORKDIR /app
 
-RUN apt-get update && apt-get install -y \
-    build-essential \
+# Minimal OS deps you actually need (curl for healthcheck, build-essential for any wheels that need compile)
+RUN apt-get update && apt-get install -y --no-install-recommends \
     curl \
-    git \
+    build-essential \
     && rm -rf /var/lib/apt/lists/*
 
+# Pre-create streamlit config dir (in case Streamlit tries to write during boot)
+RUN mkdir -p /app/.streamlit
+
+# Install Python deps first to leverage Docker layer cache
 COPY requirements.txt ./
-COPY . .
+RUN pip install -r requirements.txt
 
-RUN pip3 install -r requirements.txt
+# Now add the rest of the app
+COPY . .
 
 EXPOSE 8501
 
-HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health
+# Healthcheck (streamlit exposes this)
+HEALTHCHECK --interval=30s --timeout=3s --retries=3 \
+  CMD curl --fail http://localhost:8501/_stcore/health || exit 1
 
-ENTRYPOINT ["streamlit", "run", "app.py", "--server.port=8501", "--server.address=0.0.0.0", "--server.enableXsrfProtection=false"]
+# Run Streamlit
+ENTRYPOINT ["streamlit", "run", "app.py", "--server.port=8501", "--server.address=0.0.0.0", "--server.enableXsrfProtection=false"]