fix gandi provider

.env.default

@@ -1,5 +1,4 @@
 # ssl
-DNSCHALLENGE_PROVIDER=gandi
 GANDI_API_KEY=xxxxxxxxxxxxxxxxx
 LETSENCRYPT_EMAIL=root@localhost.localdomain
 # sites

traefik/docker-compose.yml

@@ -15,8 +15,10 @@ services:
       #- --certificatesresolvers.letsencrypt.acme.tlschallenge=true
       - --certificatesResolvers.letsencrypt.acme.dnsChallenge=true
       - --certificatesResolvers.letsencrypt.acme.dnsChallenge.resolvers=1.1.1.1:53,8.8.8.8:53
-      - --certificatesresolvers.letsencrypt.acme.dnschallenge.provider=${DNSCHALLENGE_PROVIDER}
+      - --certificatesresolvers.letsencrypt.acme.dnschallenge.provider=gandi
       #- --certificatesResolvers.letsencrypt.acme.dnsChallenge.delayBeforeCheck=0
+    environment:
+      - GANDI_API_KEY=${GANDI_API_KEY}
     labels: 
       - traefik.enable=true
       - traefik.http.routers.dashboard.rule=Host(`${HOST_TRAEFIK}.${DOMAIN}`)