Update Dockerfile

Dockerfile

@@ -1,11 +1,29 @@
 FROM python:3.10-slim
+
+# system deps
 RUN apt-get update && apt-get install -y \
     git git-lfs ffmpeg libsm6 libxext6 libgl1 && \
     rm -rf /var/lib/apt/lists/*
+
+# app dir
 WORKDIR /app
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
+
+# set writable caches
+ENV HF_HOME=/app/.cache \
+    HF_HUB_CACHE=/app/.cache/hub \
+    HF_DATASETS_CACHE=/app/.cache/datasets \
+    TRANSFORMERS_CACHE=/app/.cache/transformers
+
+# ensure dirs exist and are writable
+RUN mkdir -p /app/.cache/hub /app/.cache/datasets /app/.cache/transformers
+
+# app code
 COPY . .
-ENV GRADIO_SERVER_NAME=0.0.0.0
-ENV PORT=7860
+
+# gradio runs on PORT
+ENV GRADIO_SERVER_NAME=0.0.0.0 \
+    PORT=7860
+
 CMD ["python","app.py"]