Custom domain support

docker-compose.yml

@@ -2,7 +2,10 @@ version: '3.8'
 
 services:
   attestation:
-    build: .
+    build:
+      context: .
+      args:
+        - DOMAIN=${DOMAIN:-attestation.app}
     container_name: attestation-server
     restart: unless-stopped
     volumes:
@@ -23,6 +26,8 @@ services:
       - "80:80"
       - "443:443"
       - "443:443/udp"
+    environment:
+      - DOMAIN=${DOMAIN:-attestation.app}
     volumes:
       - ./Caddyfile:/etc/caddy/Caddyfile:ro
       - ./certs:/etc/caddy/certs:ro