Add Docker image support

Dockerfile

@@ -0,0 +1,24 @@
+FROM python:3.10-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    GRADIO_SERVER_NAME=0.0.0.0 \
+    PORT=7860
+
+WORKDIR /app
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends ffmpeg ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir --upgrade pip \
+    && pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+RUN mkdir -p .cache temp output logs/gradio
+
+EXPOSE 7860
+
+CMD ["python", "web_app.py"]