Use environment variables for the config.

See
https://github.com/nextcloud/server/pull/3966/files#diff-604e02ade0fc8de03f58c2d78fc5aef3677de5e02f388df733c00e24dae01b29R43.

docker-compose.yml

@@ -79,9 +79,10 @@ services:
       MYSQL_HOST: mysql
       MYSQL_PASSWORD: *mysql_password  # pragma: allowlist secret
       MYSQL_USER: *mysql_user
+      NC_DEFAULT_PHONE_REGION: IL
+      NC_DEBUG: "false"
       NEXTCLOUD_ADMIN_PASSWORD: *admin_password  # pragma: allowlist secret
       NEXTCLOUD_ADMIN_USER: *admin_username
-      NEXTCLOUD_DEFAULT_PHONE_REGION: IL
       NEXTCLOUD_TRUSTED_DOMAINS: '*.shore.co.il shore.co.il'
       TRUSTED_PROXIES: '172.16.0.0/12 192.168.0.0/16'
       OVERWRITEHOST: nextcloud.shore.co.il