Fix Too Many Redirect error using Caddy + Cloudflare

README.md

On Cloudflare, go to Crypto -> SSL and set it to Full or Full(strict)

Caddyfile

www.mysite.com, mysite.com {
  proxy / webapp:3000 {
    proxy_header Host {host}
    proxy_header X-Real-IP {remote}
    proxy_header X-Forwarded-Proto {scheme}
  }
  gzip
  tls your@email.com
}

docker-compose.yml

proxy:
  image: zzrot/alpine-caddy
  restart: always
  ports:
    - 80:80
    - 443:443
  links:
    - webapp
  volumes:
    - ./Caddyfile:/etc/Caddyfile
    - ./.caddy:/root/.caddy

webapp:
  build: .
  restart: always
  environment:
    - NODE_ENV=production

Dockerfile

FROM node:6-onbuild
EXPOSE 3000

server.js

/* eslint no-console:0 strict:0 */

'use strict';

const express = require('express');
const path = require('path');
const morgan = require('morgan');
const app = express();

app.use(morgan('combined'));

// serve static assets normally
app.use(express.static(`${__dirname}/public`));

app.get('*', (request, response) => {
  response.sendFile(path.resolve(__dirname, 'public', 'index.html'));
});

app.listen(3000, err => {
  if (err) console.error(err);
  console.log('Web app listening on port 3000');
});