Docker: migrate from bind mounts to named volumes

docker/nextcloud/docker-compose.toml

@@ -1,12 +1,17 @@
+[volumes.nextcloud_config]
+external = true
+
+[volumes.nextcloud_data]
+external = true
+
 [services.nextcloud]
 image = "nextcloud:fpm-alpine"
 container_name = "nextcloud"
 restart = "unless-stopped"
-user = "82:82"
 networks = ["nextcloud", "postgres", "proxy"]
 volumes = [
-  "/docker/nextcloud:/var/www/html:z",
-  "/mnt/Storage/Nextcloud:/var/www/html/data",
+  "nextcloud_config:/var/www/html",
+  "nextcloud_data:/var/www/html/data",
   "/etc/localtime:/etc/localtime:ro",
 ]
 environment = [