This is my test config
version: '3'
services:
whoami:
image: traefik/whoami
restart: always
labels:
traefik.enable: true
traefik.http.routers.whoami.rule: Host(`test.mydomain.net`)
traefik.http.routers.whoami.entrypoints: 'websecure'
traefik.http.middlewares.corsHeader.headers.accessControlAllowOriginList: '*'
traefik.http.routers.whoami.middlewares: 'corsHeader'
traefik.http.middlewares.redirect-to-https.redirectscheme.scheme: 'https'
traefik.http.routers.whoami.tls: true
traefik.http.routers.whoami.tls.certresolver: lets-encrypt
As soon as I remove traefik.http.routers.whoami.middlewares: 'corsHeader'
it works fine. I also tried using traefik.http.routers.whoami.middlewares: 'corsHeader@docker
as indicated in the docs Overview - Traefik | Site | v2.4
I am using Traefik v2.4 but I have also tried with v2.5.
I believe this used to work with Traefik v2.2 or earlier v2.x.
Any ideas?