add root Dockerfile for HF Space

Dockerfile

@@ -0,0 +1,15 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+COPY requirements.txt /app/requirements.txt
+RUN pip install --no-cache-dir -r /app/requirements.txt
+
+COPY . /app
+
+EXPOSE 8000
+
+CMD ["uvicorn", "grid_env.Server.app:app", "--host", "0.0.0.0", "--port", "8000"]