added entrypoint.sh and reflected that in Dockerfile

Dockerfile

@@ -1,17 +1,28 @@
 FROM python:3.10-slim
 
-# Set working directory
 WORKDIR /app
 
-# Copy dependency list and install python packages
+# System deps (node exporter)
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends prometheus-node-exporter ca-certificates \
+ && rm -rf /var/lib/apt/lists/*
+
+# Python deps
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Copy files into the container
+# App files
 COPY . .
 
+# Ensure entrypoint is executable
+RUN chmod +x /app/entrypoint.sh
+
+# Env for Gradio inside containers
+ENV GRADIO_SERVER_NAME=0.0.0.0
+
 # Expose container-side ports:
 EXPOSE 7860 8000 9100
 
-# Launch app
-CMD ["python", "app.py"]
+# Start both Node Exporter and the app
+ENTRYPOINT ["/app/entrypoint.sh"]
+

entrypoint.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+set -e
+
+prometheus-node-exporter &
+
+sleep 0.3
+
+exec python app.py