Using variable using docker compose with portainer stacks & IPV6 update

[smailpouri]

When using ${HOSTNAME} for example it won't parse the info properly, I tried with duckdns or noip

version: '3.5'
services:
  dynamic-dns:
    container_name: ${CONTAINER}
    hostname: ${CONTAINER}
    image: joweisberg/dynamic-dns:latest
    restart: unless-stopped
    environment:
      - TZ=Europe/Paris
      - SERVICE=${SERVICE}
      - USER=${USER}
      - PASSWORD=${PASSWORD}
      - HOSTNAME=${HOSTNAME}
    healthcheck:
      test: /usr/bin/healthcheck
      interval: 10s
      timeout: 5s
      retries: 5

CONTAINER=ddns-duckdns
SERVICE=duckdns
[email protected]
PASSWORD=1111111111111
HOSTNAME=myhost.duckdns.org

And this below does not seem to do anything either.
UPDATEIPV6=1

[joweisberg]

Hello, I use also variables without issues.
Are you sure variables are correcty declare on compose?
Can you check with inspect command bellow and check or share the result?

docker container inspect -f '{{range .Config.Env}}{{printf "%s\n" .}}{{end}}' [container_name|id]

Thanks