Update Dockerfile

Dockerfile

@@ -1,17 +1,29 @@
-# Use official Python image
-FROM python:3.10-slim
+# ---- Base image ----
+FROM python:3.11-slim
 
-# Set working directory
+# ---- System deps (for numpy/scipy/sklearn) ----
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    libatlas-base-dev \
+    gfortran \
+ && rm -rf /var/lib/apt/lists/*
+
+# ---- Workdir ----
 WORKDIR /app
 
-# Copy files to the container
-COPY . /app
+# ---- Install Python deps first (better caching) ----
+COPY requirements.txt /app/
+RUN pip install --no-cache-dir --upgrade pip \
+ && pip install --no-cache-dir -r requirements.txt
 
-# Install dependencies
-RUN pip install --no-cache-dir -r requirements.txt
+# ---- App code ----
+COPY . /app
 
-# Expose port (Hugging Face expects 7860, but Flask uses 5000 — both fine)
-EXPOSE 5000
+# ---- Port configuration ----
+# Hugging Face sets $PORT for you; default to 7860 for local dev
+ENV PORT=7860
+EXPOSE 7860
 
-# Run the app with gunicorn
-CMD ["gunicorn", "--workers", "2", "--threads", "2", "--timeout", "120", "--bind", "0.0.0.0:5000", "app:app"]
+# ---- Start server (bind to $PORT) ----
+# 1 worker + 2 threads is enough for CPU Spaces; adjust if needed
+CMD ["bash", "-lc", "gunicorn app:app --bind 0.0.0.0:${PORT} --workers 1 --threads 2 --timeout 120 --log-level info"]