It seems like the ip-address is set to an internal or reserved ip-address. This is not supported

[Rien]

To add to this, my router has 2 settings for HTTPS Remote Access, it is currently switched on with Port Number 443. The only other option is port 8443, which I can select from a drop-down menu.

In the Port Map Settings, I have the following IPv4 Portmap Rules set:

[Rien]

Thinking that it could also be related to my domain name already having an SSL certificate through LetsEncrypt on my wordpress install. Potentially they are clashing?

Stabbing in the dark.

[Rien]

Any guidance?

[Rien]

Nothing was working, I tried change from NPM to Caddy, kept getting the same error “domain is not reachable on Port 443 from within this container. … You can work around that by setting up a local DNS-server.”

So then I tried setting up Pihole as a local DNS server but also had a bunch of trouble, and still got the same error when trying to install Nextcloud from the AIO screen.

Followed this youtuber’s instructions and got it working, more or less At least I am getting to install Nextcloud and access it through a local IP now. I can’t access it through my subdomain, obviously, as I haven’t done anything with that in this new try.

Anyhow, I would like to know why I am able to install and use Nextcloud now. What is different than the other way of installing through the official github documentation with NPM and a subdomain?

Here is the yaml file I used:

---

services:
nextcloud:
image: lscr.io/linuxserver/nextcloud:28.0.3
container_name: nextcloud
depends_on:
- nextcloud-mariadb
networks:
nextcloud-network:
ipv4_address: 10.0.0.49 #Change, your nextcloud ipaddress
backend-network:
environment:
- PUID=1000 #Change to your user PUID
- PGID=1000 #Change to your user PGID
- TZ=America/Chicago #Change to your timezone
volumes:
- CHANGE_TO_COMPOSE_DATA_PATH/nextcloud/config:/config
- CHANGE_TO_COMPOSE_DATA_PATH/nextcloud/data:/data
restart: unless-stopped

Mariadb 10.11.6

nextcloud-mariadb:
image: lscr.io/linuxserver/mariadb:10.11.6
container_name: nextcloud-mariadb
networks:
backend-network:
environment:
- PUID=1000 #Change to your user PUID
- PGID=1000 #Change to your user PGID
- TZ=America/Chicago
- MYSQL_ROOT_PASSWORD=ENTERSECUREPASSWORD
- MYSQL_DATABASE=nextcloud_database
- MYSQL_USER=nextcloud-dbuser
- MYSQL_PASSWORD=ENTERASECUREDATABASEPASSWORD
volumes:
- CHANGE_TO_COMPOSE_DATA_PATH/nextcloud/mariadb/config:/config
ports:
- 3306:3306
restart: unless-stopped
networks:
backend-network:
name: mariadb-backend-network
nextcloud-network:
name: local-network
external: true