Cleanup, ommit ipv6

compose.yml

@@ -11,7 +11,7 @@ x-html5-backend: &html5backend
     - etherpad
   environment: &html5backend-env
     DOMAIN: ${DOMAIN}
-    CLIENT_TITLE: ${CLIENT_TITLE}
+    CLIENT_TITLE: BigBlueButton
     LISTEN_ONLY_MODE: ${LISTEN_ONLY_MODE:-true}
     DISABLE_ECHO_TEST: ${DISABLE_ECHO_TEST:-false}
     AUTO_SHARE_WEBCAM: ${AUTO_SHARE_WEBCAM:-false}
@@ -116,7 +116,7 @@ services:
     environment:
       DOMAIN: ${DOMAIN}
       EXTERNAL_IPv4: ${EXTERNAL_IPv4}
-      EXTERNAL_IPv6: ${EXTERNAL_IPv6:-::1}
+      # EXTERNAL_IPv6: ${EXTERNAL_IPv6:-::1}
       SIP_IP_ALLOWLIST: ${SIP_IP_ALLOWLIST:-}
       DISABLE_SOUND_MUTED: ${DISABLE_SOUND_MUTED:-false}
       DISABLE_SOUND_ALONE: ${DISABLE_SOUND_ALONE:-false}
@@ -341,7 +341,6 @@ services:
   # todo: greenlight
   greenlight:
     image: bigbluebutton/greenlight:v3.1.0
-    env_file: .env
     depends_on:
       - postgres
       - redis