Update Dockerfile

Dockerfile

@@ -1,21 +1,26 @@
-FROM python:3.10
+FROM python:3.9-slim-bookworm
 
 WORKDIR /app
 
-RUN apt-get update && apt-get install -y \
-    build-essential \
-    curl \
-    software-properties-common \
-    git \
-    && rm -rf /var/lib/apt/lists/*
+# Minimal system deps; no software-properties-common
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential curl git ca-certificates \
+ && rm -rf /var/lib/apt/lists/*
 
-COPY requirements.txt ./
-COPY src/ ./src/
+# Install Python deps first for better caching
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
 
-RUN pip3 install -r requirements.txt
+# App code
+COPY src/ ./src/
 
-EXPOSE 8501
+# Hugging Face Docker Spaces default port is 7860 unless overridden
+ENV PORT=7860
+EXPOSE 7860
 
-HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health
+# Healthcheck uses the same port
+HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
+  CMD curl --fail http://127.0.0.1:${PORT}/_stcore/health || exit 1
 
-ENTRYPOINT ["streamlit", "run", "src/streamlit_app.py", "--server.port=8501", "--server.address=0.0.0.0"]
+# Streamlit bound to $PORT
+CMD ["sh", "-c", "streamlit run src/streamlit_app.py --server.address=0.0.0.0 --server.port=${PORT}"]