fix: use variable from .env file

Author: BernhardFuchs

.env

@@ -74,3 +74,5 @@ uniresolver_driver_did_empe_did_methods=[{"method":"empe","network":"testnet","u
 uniresolver_driver_did_nfd_algod_url=https://mainnet-api.4160.nodely.dev
 uniresolver_driver_did_nfd_algod_token=
 
+uniresolver_driver_did_art_RESOLVER_API_URL=https://did-art.articulator.ai
+

docker-compose.yml

@@ -441,7 +441,7 @@ services:
     ports:
       - "8180:8081"
     environment:
-      - RESOLVER_API_URL=https://did-art.articulator.ai
+      - RESOLVER_API_URL: ${uniresolver_driver_did_art_RESOLVER_API_URL}
 
   driver-did-nfd:
     image: txnlab/did-nfd-resolver:0.1.0