nginx-proxy-manager + nextcloud:fpm = 502 Bad Gateway

I’m using two separate docker-compose files, some with npm and one with nextcloud. I get the npm network to use in the nextcloud, but I have an error when accessing the 502 Bad Gateway nextcloud.

Below my nextcloud docker-compose

version: '3.9'

services:
  nextcloud_db:
    image: postgres:13
    container_name: nextcloud_db
    restart: always
    volumes:
      - ./volumes/db:/var/lib/postgresql/data
    env_file:
      - db.env

  nextcloud:
    image: nextcloud:fpm
    container_name: nextcloud
    restart: always
    expose:
      - '80'
      - '9000'
    volumes:
      - ./volumes/nextcloud:/var/www/html
    environment:
      - POSTGRES_HOST=nextcloud_db
    env_file:
      - db.env
    depends_on:
      - nextcloud_db

networks:
  default:
    external:
      name: nginxproxymanager_default

My conteiners

Configuration SSL

[talesam]

Não tenho certeza se é necessário, ainda não testei cal e carddav.

For version 21 it is, for version 20 it is not.

[sgb999]

I think you’re confused. It has nothing to do with the image that you are proxying to at all. Its an issue when the app talks to the database, it happens for any docker image you proxy to even if apache is not involved.