Cross-reference Node.js release schedule to set project scope, fixes #1071

Author: fulldecent

README.md

@@ -27,6 +27,7 @@ The official Node.js docker image, made with love by the node community.
   - [`node:slim`](#nodeslim)
 - [License](#license)
 - [Supported Docker versions](#supported-docker-versions)
+- [Supported Node.js versions](#supported-nodejs-versions)
 - [Governance and Current Members](#governance-and-current-members)
   - [Docker Working Group Members](#docker-working-group-members)
   - [Docker Working Group Collaborators](#docker-working-group-collaborators)
@@ -256,6 +257,10 @@ Please see [the Docker installation
 documentation](https://docs.docker.com/installation/) for details on how to
 upgrade your Docker daemon.
 
+## Supported Node.js versions
+
+This project will support Node.js versions as still under active support as per the [Node.js release schedule](https://github.com/nodejs/Release).
+
 ## Governance and Current Members
 
 The Node.js Docker Image is governed by the Docker Working Group. See