feat: add Dockerfile for containerized REST API deployment

Dockerfile

@@ -0,0 +1,22 @@
+FROM python:3.10-slim
+
+WORKDIR /app
+
+# System deps for OpenCV
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libgl1-mesa-glx libglib2.0-0 && \
+    rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt fastapi uvicorn python-multipart
+
+COPY . .
+
+# Health check for orchestrators (K8s, ECS, Docker Compose)
+HEALTHCHECK --interval=30s --timeout=5s --retries=3 \
+    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/health')" || exit 1
+
+EXPOSE 8000
+
+# Run the REST API
+CMD ["uvicorn", "video_intelligence.api:app", "--host", "0.0.0.0", "--port", "8000"]