flygun

Dockerfile

FROM    node:latest
WORKDIR /app
COPY    ./index.js ./
COPY    ./package*.json ./
RUN     npm ci
EXPOSE  8080
CMD     ["npm", "start"]

index.js

import Gun from 'gun';
import cluster from 'node:cluster';
import { createServer } from 'node:http';
const dir = import.meta.dir ?? import.meta.url.replace(/^file:\/{1,}(.+)\/.+?$/, './$1');
const died = 'worker %d died (%s)... creating new worker';
const fork = () => cluster.fork();
const srvListen = port => () => console.log('GUN database running on :%d', port);
const wrkListen = ({ process: { pid } }, c, s) => (console.log(died, pid, s || c), fork());
((host, port) => {
  if (cluster.isPrimary) return fork(), cluster.on('exit', wrkListen);
  const server = createServer({}, Gun.serve(dir));
  const web = server.listen(port, host, srvListen(port));
  Gun({ web, peers: {} });
})(process.env.HOST ?? '0.0.0.0', +(process.env.PORT ?? '8080'));

package.json

{
  "version": "0.0.1",
  "scripts": {
    "start": "node index.js"
  },
  "dependencies": {
    "gun": "latest"
  },
  "type": "module"
}