first we need the check in nodebb/.docker/config

vi healtcheck.js

const http = require('http');
const options = {
    host: '127.0.0.1',
    port: 4567,
    timeout: 2000
};

const healthCheck = http.request(options, (res) => {
    console.log(`HEALTHCHECK STATUS: ${res.statusCode}`);
    if (res.statusCode == 200) {
        process.exit(0);
    }
    else {
        process.exit(1);
    }
});

healthCheck.on('error', function (err) {
    console.error('ERROR');
    process.exit(1);
});

healthCheck.end();

Then we can add the check in our yml File

    healthcheck:
      test: ["CMD", "node", "/opt/config/healthcheck.js"]
      interval: 5s
      timeout: 3s
      retries: 5
      start_period: 15s

To check if everything is Working we can watch docker ps, it should be healthy there or use docker inspeckt

docker inspect --format='{{json .State.Health}}' <container-id>

Greetings