fix: use freifunk DNS resolver

Closes coop-cloud/organising#180.

cli/server/init.go

@@ -35,6 +35,9 @@ later for more advanced use cases.
 			return err
 		}
 
+		// https://www.privacy-handbuch.de/handbuch_93d.htm
+		freifunkDNS := "5.1.66.255:53"
+
 		resolver := &net.Resolver{
 			PreferGo: false,
 			Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
@@ -42,10 +45,10 @@ later for more advanced use cases.
 					Timeout: time.Millisecond * time.Duration(10000),
 				}
 				// comrade librehosters DNS resolver https://snopyta.org/service/dns/
-				return d.DialContext(ctx, "udp", "95.216.24.230:53")
+				return d.DialContext(ctx, "udp", freifunkDNS)
 			},
 		}
-		logrus.Debugf("created DNS resolver via 95.216.24.230")
+		logrus.Debugf("created DNS resolver via '%s'", freifunkDNS)
 
 		ctx := context.Background()
 		ips, err := resolver.LookupIPAddr(ctx, domainName)