Just note that if you somehow get out of those meetings, incorrect information will be propagated somehow. Even if you put the correct answers in an email and send it to everyone involved. If someone has a way to prevent that from happening please let me know. It’s killing me slowly.

I use the linuxserver images for Nextcloud. Have worked pretty well for me over the past few years.

https://hub.docker.com/r/linuxserver/nextcloud

Reformatting that compose for people:

version: "2.1"                                                services:
  wireguard:
    image: linuxserver/wireguard
    container_name: wireguard
    cap_add:
      - NET_ADMIN
      - SYS_MODULE
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Asia/Singapore
      - SERVERURL=auto #optional
      - SERVERPORT=51820 #optional
      - PEERS=1 #optional
      - PEERDNS=auto #optional
      - INTERNAL_SUBNET=10.13.13.0 #optional
    volumes:
      - ./config:/config
      - /lib/modules:/lib/modules
    ports:
      - 51820:51820/udp
    sysctls:
      - net.ipv4.ip_forward=1
      - net.ipv4.conf.all.src_valid_mark=1
    restart: unless-stopped

Sounds like you didn’t read the extended manual: https://github.com/linuxserver/docker-wireguard

There are a lot of other configs for that container that must be provided before startup. It’s just a generic runner. If you want it to run as a server you need to follow this section: https://github.com/linuxserver/docker-wireguard?tab=readme-ov-file#server-mode

Are you at getting the handshake in the app? If so, you’re probably just missing the dispatch commands for traffic masquerading.