node:alpine vs node:slim

Dockerfile

FROM node:slim
WORKDIR /opt/app
COPY ./ ./
EXPOSE 8080
CMD node ./

index.js

require('http')
  .createServer((_, res) =>
    res.writeHead(200).end('ok')
  )
  .listen(8080)

const SIGNALS = ['SIGTERM', 'SIGINT']
const term = s => {
  console.log('Terminated by ', s)
  process.exit(0)
}

SIGNALS.forEach(signal => {
  process.on(signal, term.bind(null, signal))
})