This is a sample starter project that provides you with a basic Express app and a sample test in a /test sub directory. This sample project uses Express v4.18.x and enables health checking and application metrics out of the box. You can override or enhance the following endpoints by configuring your own health checks in your application.

Health-checking enables the cloud platform to determine the readiness and liveness of your application.

These endpoints will be available for you to use:

• Readiness endpoint: https://localhost:3000/ready
• Liveness endpoint: https://localhost:3000/live

The prom-client module will collect a wide range of resource-centric (CPU, memory) and application-centric (HTTP request responsiveness) metrics from your application, and then expose them as multi-dimensional time-series data through an application endpoint for Prometheus to scrape and aggregate.

This endpoint will be available for you to use:

• Metrics endpoint: https://localhost:3000/metrics

For constructing node_modules in the first build stage of Dockerfile, we use npm ci to avoid file permissions error. For npm versions greater than 6, npm install opens package-lock.json in write mode, which is restricted to read mode by ubi images and as a result, node_modules construction ends up with a file permissions error.

This stack is licensed under the EPL 2.0 license.