Pour firebase cors. 

gcloud config set project mymuseum-3b97f

gsutil cors get gs://mymuseum-3b97f.appspot.com

Pour le moment : 

[{"maxAgeSeconds": 3600, "method": ["GET", "POST", "DELETE", "PUT"], "origin": ["http://localhost:49430", "https://manager.myinfomate.be", "https://manager.mymuseum.be", "https://fortsaintheribert.mymuseum.be", "https://fortsaintheribert.myinfomate.be", "https://visitnamur.myinfomate.be"]}]