Add Dockerfile and document FastAPI usage

Dockerfile

@@ -0,0 +1,27 @@
+FROM python:3.10-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
+# System deps for OpenCV/ffmpeg
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ffmpeg \
+    libgl1 \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+# Install Python deps
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy source
+COPY . .
+
+EXPOSE 8000
+
+# Optional: set at runtime
+ENV FACE_SWAP_API_KEY=""
+
+CMD ["python3", "-m", "uvicorn", "fastapi_app:app", "--host", "0.0.0.0", "--port", "8000"]
+

README.md

@@ -11,4 +11,30 @@ license: unknown
 short_description: 'All-in-one face swapping: single photo, video, multi-source,'
 ---
 
-Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference
+## Run locally (FastAPI)
+
+1. Install deps:
+   - `python3 -m pip install -r requirements.txt`
+2. (Optional) set API key:
+   - `export FACE_SWAP_API_KEY=your_key`
+3. Start server:
+   - `python3 -m uvicorn fastapi_app:app --host 0.0.0.0 --port 8000`
+
+Endpoints:
+- `GET /health`
+- `POST /swap/photo` (multipart form: `source_image`, `destination_image`, optional `source_face_idx`, `destination_face_idx`)
+- `POST /swap/video` (multipart form: `source_image`, `target_video`, optional indices)
+Include header `X-API-Key` if `FACE_SWAP_API_KEY` is set.
+
+## Docker
+
+Build:
+- `docker build -t faceswapall .`
+
+Run:
+- `docker run -p 8000:8000 -e FACE_SWAP_API_KEY=your_key faceswapall`
+
+## Original Gradio app
+
+The space still includes `app.py` for the Gradio UI; run with:
+- `python3 app.py --share`