Example: Docker Nextcloud-FPM + Caddy v2 webserver

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The Nextcloud Quick reference on Docker Hub states that there are two versions (apache or fpm) of the Nextcloud image. The apache version contains a full Nextcloud installation including an apache web server. The fpm version must be combined with any webserver that can proxy the http requests to the FastCGI-port of the container.

In the Quick reference fpm example, an nginx container is combined with the Nextcloud-fpm image and a MariaDB database container. If you would rather use Caddy in place of nginx, below you will find an equivalent fpm example that replaces nginx with Caddy v2 as the webserver.

docker-compose.yml:

version: '2'

volumes:
  nextcloud:
  db:
  caddy_data:

services:
  db:
    image: mariadb
    command: --transaction-isolation=READ-COMMITTED --binlog-format=ROW
    restart: always
    volumes:
      - db:/var/lib/mysql
    environment:
      - MYSQL_ROOT_PASSWORD=
      - MYSQL_PASSWORD=
      - MYSQL_DATABASE=nextcloud
      - MYSQL_USER=nextcloud

  app:
    image: nextcloud:fpm
    links:
      - db
    volumes:
      - nextcloud:/var/www/html
    restart: always

  web:
    image: caddy
    ports:
      - 8080:80
    links:
      - app
    volumes:
      - ./Caddyfile:/etc/caddy/Caddyfile
      - caddy_data:/data
    volumes_from:
      - app
    restart: always

Caddyfile:

:80 {
	redir /.well-known/carddav /remote.php/dav 301
	redir /.well-known/caldav /remote.php/dav 301

	header {
		# enable HSTS
		# Strict-Transport-Security max-age=31536000;
	}

	# .htaccess / data / config / ... shouldn't be accessible from outside
	@forbidden {
		path /.htaccess
		path /data/*
		path /config/*
		path /db_structure
		path /.xml
		path /README
		path /3rdparty/*
		path /lib/*
		path /templates/*
		path /occ
		path /console.php
	}
	respond @forbidden 404

	root * /var/www/html
	php_fastcgi app:9000
	file_server
}

Reference: Dockerised Caddy V2 + Nextcloud-FPM to create an unsecured Nextcloud instance - #3 by basil

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