Update Dockerfile

Dockerfile

@@ -1,18 +1,26 @@
+# Dockerfile — minimal, reliable
 FROM python:3.11-slim
 
 WORKDIR /app
 
-# Copy requirements
+# Install tiny set of system deps needed by some wheels (kept minimal)
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends build-essential ca-certificates && \
+    rm -rf /var/lib/apt/lists/*
+
+# Copy requirements and install
 COPY backend/requirements.txt backend/requirements.txt
 COPY frontend/requirements.txt frontend/requirements.txt
 
-# Install dependencies
 RUN pip install --no-cache-dir -r backend/requirements.txt -r frontend/requirements.txt
 
 # Copy source
 COPY backend backend
 COPY frontend frontend
 COPY start.sh start.sh
+
+# Ensure start script is executable in the image
 RUN chmod +x start.sh
 
-CMD ["./start.sh"]
+# Entrypoint
+CMD ["./start.sh"]