Building a NodeJS container image with Cloud-Native Buildpacks

This project shows how to build a NodeJS container image with Cloud-Native Buildpacks (CNB) and Paketo Buildpacks.

You don't need to write a Dockerfile anymore: using CNB you get secured up-to-date container images out of your source code.

You don't need to care about the runtime environment (is my NodeJS runtime up-to-date?): CNB will automatically provision dependencies and configure your container.

How to use it?

Download and install the pack CLI. You'll need a Docker daemon running to build container images.

Use the Paketo builder:

$ pack config default-builder gcr.io/paketo-buildpacks/builder:base

You're now ready to use CNB with Paketo.

Run this command to build a container image:

$ pack build myorg/cnb-nodejs
...
Successfully built image myorg/cnb-nodejs

After a couple of minutes, your container image will be published to your local Docker daemon:

$ docker image ls | grep  cnb-nodejs
REPOSITORY                             TAG                  IMAGE ID    
myorg/cnb-nodejs                       latest               b1a0d242e5ec

You can run this container right away:

$ docker run --rm -p 8080:8080/tcp myorg/cnb-nodejs

> cnb-nodejs@1.0.0 start /workspace
> node server.js

Server listening on port 8080

Deploying to Kubernetes

Use these Kubernetes descriptors to deploy this app to your cluster:

$ kubectl apply -f k8s

This app will be deployed to namespace cnb-nodejs:

kubectl -n cnb-nodejs get pod,deployment,svc
NAME                       READY   STATUS    RESTARTS   AGE
pod/app-7c7957cb94-lpmk8   1/1     Running   0          35m

NAME                        READY   UP-TO-DATE   AVAILABLE   AGE
deployment.extensions/app   1/1     1            1           35m

NAME          TYPE           CLUSTER-IP      EXTERNAL-IP      PORT(S)        AGE
service/app   LoadBalancer   10.100.200.35   35.187.115.254   80:30355/TCP   35m

Contribute

Contributions are always welcome!

Feel free to open issues & send PR.

License

Copyright © 2022 VMware, Inc. or its affiliates.

This project is licensed under the Apache Software License version 2.0.