Docker: migrate from bind mounts to named volumes

docker/pihole/docker-compose.toml

@@ -1,4 +1,6 @@
-[services]
+[volumes]
+config = {}
+dnsmasq = {}
 
 [services.pihole]
 container_name = "pihole"
@@ -6,8 +8,8 @@ image = "pihole/pihole"
 ports = ["53:53/tcp", "53:53/udp", "67:67/udp", "8069:80/tcp"]
 networks = ["proxy"]
 volumes = [
-  "/docker/pihole/pihole:/etc/pihole/",
-  "/docker/pihole/dnsmasq:/etc/dnsmasq.d/",
+  "config:/etc/pihole/",
+  "dnsmasq:/etc/dnsmasq.d/",
 ]
 dns = ["127.0.0.1", "1.1.1.1"]
 cap_add = ["NET_ADMIN"]
@@ -17,7 +19,5 @@ restart = "unless-stopped"
 TZ = "Europe/Helsinki"
 WEBPASSWORD = "${WEBPASSWORD}"
 
-[networks]
-
 [networks.proxy]
 external = true