Update Dockerfile

Dockerfile

@@ -1,8 +1,22 @@
 FROM python:3.10-slim
-ENV DEBIAN_FRONTEND=noninteractive PYTHONDONTWRITEBYTECODE=1 PYTHONUNBUFFERED=1
+
+# System deps: ffmpeg is REQUIRED for audio decoding
+RUN apt-get update && apt-get install -y ffmpeg curl ca-certificates && rm -rf /var/lib/apt/lists/*
+
+ENV DEBIAN_FRONTEND=noninteractive \
+    PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    HF_HOME=/root/.cache/huggingface \
+    TRANSFORMERS_CACHE=/root/.cache/huggingface \
+    FASTER_WHISPER_MODEL=tiny.en \
+    NUM_THREADS=2
+
 WORKDIR /code
+
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
+
 COPY . .
+
 EXPOSE 7860
-CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]
+CMD ["uvicorn","app:app","--host","0.0.0.0","--port","7860"]