Fix Dockerfile: use separate start.sh instead of heredoc

Dockerfile

@@ -15,50 +15,8 @@ COPY pyproject.toml uv.lock README.md ./
 COPY tensors/ ./tensors/
 RUN uv pip install --system '.[server]'
 
-# Entrypoint script
-COPY <<'EOF' /app/start.sh
-#!/bin/sh
-set -e
-
-DATA="${DATA_DIR:-/data}"
-
-# Create directory structure for model storage
-mkdir -p "$DATA/models/checkpoints"
-mkdir -p "$DATA/models/loras"
-mkdir -p "$DATA/models/embeddings"
-mkdir -p "$DATA/models/vae"
-mkdir -p "$DATA/models/controlnet"
-mkdir -p "$DATA/models/upscalers"
-mkdir -p "$DATA/output"
-mkdir -p "$DATA/gallery"
-mkdir -p "$DATA/db"
-
-# Write tensors config pointing to addon storage paths
-mkdir -p /app/config/tensors
-cat > /app/config/tensors/config.toml <<CONF
-[paths]
-models_dir = "$DATA/models"
-checkpoints = "$DATA/models/checkpoints"
-loras = "$DATA/models/loras"
-vae = "$DATA/models/vae"
-embeddings = "$DATA/models/embeddings"
-controlnet = "$DATA/models/controlnet"
-upscalers = "$DATA/models/upscalers"
-
-[comfyui]
-url = "${COMFYUI_URL:-http://127.0.0.1:8188}"
-CONF
-
-export XDG_CONFIG_HOME=/app/config
-export XDG_DATA_HOME="$DATA"
-
-echo "tensors starting"
-echo "  DATA_DIR=$DATA"
-echo "  COMFYUI_URL=${COMFYUI_URL:-not set}"
-echo "  DB=$DATA/db/models.db"
-
-exec tsr serve --host 0.0.0.0 --port 5000
-EOF
+# Copy entrypoint
+COPY start.sh /app/start.sh
 RUN chmod +x /app/start.sh
 
 EXPOSE 5000