dockerfile example node

Dockerfile

# BASE IMAGE
FROM node:18-slim AS base
RUN apt update && apt install -y curl tini


ENV PORT=3000

# Create app directory as example
WORKDIR /app
RUN yarn add express
COPY index.js /app/index.js


ENTRYPOINT ["/usr/bin/tini", "--"]
CMD ["node", "/app/index.js"]
# CMD ["node", "/app/node_modules/.bin/next", "start"] # next


HEALTHCHECK --interval=1m --timeout=20s --start-period=300s \
  CMD curl -f http://localhost:3000/login || exit 1

index.js

const express = require('express')
const app = express()
const port = 3000

app.get('/', (req, res) => {
    res.send('Hello World!')
})

app.listen(port, () => {
    console.log(`Example app listening on port ${port}`)
})