Fix cache perms + port 7860 for HF Spaces

Dockerfile

@@ -6,6 +6,14 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 
 WORKDIR /app
 
+# === caches escribibles dentro de /app ===
+ENV HF_HOME=/app/.cache \
+    HF_HUB_CACHE=/app/.cache \
+    XDG_CACHE_HOME=/app/.cache \
+    OPENCLIP_CACHE_DIR=/app/.cache \
+    TORCH_HOME=/app/.cache/torch
+RUN mkdir -p /app/.cache /app/.cache/torch
+
 COPY requirements.txt ./
 RUN pip install --upgrade pip && pip install -r requirements.txt
 
@@ -13,5 +21,12 @@ COPY server1.py .
 COPY text_embeddings_h14.pt .
 COPY text_embeddings_modelos_h14.pt .
 
-# Hugging Face Spaces exige escuchar en el puerto 7860
+# (OPCIONAL) pre-descargar los pesos durante el build para evitar descarga en runtime
+RUN python - <<'PY'
+import open_clip
+open_clip.create_model_and_transforms('ViT-H-14', pretrained='laion2b_s32b_b79k', cache_dir="/app/.cache")
+print("Pesos cacheados en /app/.cache")
+PY
+
+# En Spaces debes escuchar en 7860
 CMD ["python", "-m", "uvicorn", "server1:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1"]