backend/entrypoint.sh

#!/bin/bash
set -e

MODEL_DIR="/app/models"
MODEL_FILE="$MODEL_DIR/sam2.1_hiera_large.pt"

mkdir -p "$MODEL_DIR"

if [ ! -f "$MODEL_FILE" ]; then
    echo "[entrypoint] SAM2 model not found. Downloading from HuggingFace (~900MB)..."
    python - <<'EOF'
from huggingface_hub import hf_hub_download
path = hf_hub_download(
    repo_id="facebook/sam2.1-hiera-large",
    filename="sam2.1_hiera_large.pt",
    local_dir="/app/models",
)
print(f"[entrypoint] Model saved to {path}")
EOF
    echo "[entrypoint] Download complete."
else
    echo "[entrypoint] SAM2 model already present at $MODEL_FILE. Skipping download."
fi

exec uvicorn main:app --host 0.0.0.0 --port "${PORT:-8000}"