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Node.js#

The Lagoon Node.js Docker image. Based on the official Node Alpine images.

Supported Versions#

We ship 2 versions of Node.js images: the normal node:version image and the node:version-builder.

The builder variant of those images comes with additional tooling that is needed when you build Node.js apps (such as the build libraries, npm and Yarn). For a full list check out their Dockerfile.

  • 12 (available for compatibility only, no longer officially supported) - uselagoon/node-12
  • 14 Dockerfile (Security Support until April 2023) - uselagoon/node-14
  • 16 Dockerfile (Security Support until September 2023) - uselagoon/node-16
  • 18 Dockerfile (Security Support until April 2025) - uselagoon/node-18

Tip

We stop updating EOL Node.js images usually with the Lagoon release that comes after the officially communicated EOL date: https://nodejs.org/en/about/releases/.

Lagoon adaptions#

The default exposed port of Node.js containers is port 3000.

Persistent storage is configurable in Lagoon, using the lagoon.type: node-persistent. See the docs for more info

Use the following labels in your docker-compose.yml file to configure it:

  • lagoon.persistent = use this to define the path in the container to use as persistent storage - e.g. /app/files.
  • lagoon.persistent.size = this to tell Lagoon how much storage to assign this path.
  • If you have multiple services that share the same storage, use this lagoon.persistent.name = (optional) use this to tell Lagoon to use the storage defined in another named service.

docker-compose.yml snippet#

docker-compose.yml
    node:
        build:
            # this configures a build from a Dockerfile in the root folder
            context: .
            dockerfile: Dockerfile
        labels:
            # tells Lagoon this is a node service, configured with 500MB of persistent storage at /app/files
            lagoon.type: node-persistent
            lagoon.persistent: /app/files
            lagoon.persistent.size: 500Mi
        ports:
        # local development only
            # this exposes the port 3000 with a random local port
            # find it with `docker-compose port node 3000`
            - "3000"
        volumes:
        # local development only
            # mounts a named volume (files) at the defined path for this service to replicate production
            - files:/app/files