fix: add agent key auth for ingest endpoints

examples/docker/nodejs-instrumented/Dockerfile

@@ -0,0 +1,29 @@
+# ═══════════════════════════════════════════════════════════
+# 🐍 OPHION - Node.js Instrumented App Dockerfile
+# Example showing how to add OpenTelemetry to any Node.js app
+# ═══════════════════════════════════════════════════════════
+
+FROM node:20-alpine
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies + OpenTelemetry auto-instrumentation
+RUN npm install && \
+    npm install @opentelemetry/auto-instrumentations-node \
+                @opentelemetry/api \
+                @opentelemetry/sdk-node \
+                @opentelemetry/exporter-trace-otlp-http \
+                @opentelemetry/exporter-metrics-otlp-http
+
+# Copy application code
+COPY . .
+
+# Expose port
+EXPOSE 3000
+
+# Start with auto-instrumentation
+# The NODE_OPTIONS env var in docker-compose.yml handles instrumentation
+CMD ["node", "server.js"]