Statistics with Grafana/Prometheus with sensor based on Overleaf instance statistics- #178

tools/reference_stack_compose/instance-sensor/Dockerfile

@@ -0,0 +1,20 @@
+# overleaf-instance-sensor — self-contained prometheus gauge exporter for
+# the PR yu-i-i/overleaf-cep#178 instance-statistics sensors.
+FROM node:22-alpine
+
+WORKDIR /app
+ENV NODE_ENV=production
+
+COPY package.json ./
+RUN npm install --omit=dev --no-audit --no-fund
+
+COPY sensor.mjs ./
+RUN chown -R node:node /app
+
+EXPOSE 9464
+USER node
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=30s --retries=5 \
+  CMD wget -q --spider --timeout=3 http://127.0.0.1:9464/metrics || exit 1
+
+ENTRYPOINT ["node", "sensor.mjs"]