Support custom DNS

[totoCZ]

Hi,

it would be nice to support custom DNS resolver.

My own network in Thailand is obviously censorship-free, but I can use ISP's censored DNS.

I don't want to run another Dnsmasq somehow in docker, etc.

I didn't see a way to specify custom DNS.

[Lanius-collaris]

See https://docs.docker.com/engine/network/#dns-services

Containers use the same DNS servers as the host by default, but you can override this with --dns

[Lanius-collaris]

Or you can apply this patch and run [email protected] with -O DNSOverUDPResolver='yourdns:53'

diff --git a/internal/experiment/webconnectivitylte/config.go b/internal/experiment/webconnectivitylte/config.go
index 85fb13a7..3e0af0e8 100644
--- a/internal/experiment/webconnectivitylte/config.go
+++ b/internal/experiment/webconnectivitylte/config.go
@@ -6,5 +6,5 @@ package webconnectivitylte
 
 // Config contains webconnectivity experiment configuration.
 type Config struct {
-	DNSOverUDPResolver string
+	DNSOverUDPResolver string `ooni:"DNS over UDP resolver"`
 }