fix(health): change default target address to cloudflare.com:443

Dockerfile

@@ -124,7 +124,7 @@ ENV VPN_SERVICE_PROVIDER=pia \
     LOG_LEVEL=info \
     # Health
     HEALTH_SERVER_ADDRESS=127.0.0.1:9999 \
-    HEALTH_TARGET_ADDRESS=github.com:443 \
+    HEALTH_TARGET_ADDRESS=cloudflare.com:443 \
     HEALTH_VPN_DURATION_INITIAL=6s \
     HEALTH_VPN_DURATION_ADDITION=5s \
     # DNS over TLS

internal/configuration/settings/health.go

@@ -65,7 +65,7 @@ func (h *Health) OverrideWith(other Health) {
 
 func (h *Health) SetDefaults() {
 	h.ServerAddress = helpers.DefaultString(h.ServerAddress, "127.0.0.1:9999")
-	h.TargetAddress = helpers.DefaultString(h.TargetAddress, "github.com:443")
+	h.TargetAddress = helpers.DefaultString(h.TargetAddress, "cloudflare.com:443")
 	h.VPN.setDefaults()
 }
 

internal/configuration/settings/settings_test.go

@@ -66,7 +66,7 @@ func Test_Settings_String(t *testing.T) {
 |   └── Log level: INFO
 ├── Health settings:
 |   ├── Server listening address: 127.0.0.1:9999
-|   ├── Target address: github.com:443
+|   ├── Target address: cloudflare.com:443
 |   └── VPN wait durations:
 |       ├── Initial duration: 6s
 |       └── Additional duration: 5s

internal/healthcheck/health_test.go

@@ -19,7 +19,7 @@ func Test_Server_healthCheck(t *testing.T) {
 		t.Parallel()
 
 		dialer := &net.Dialer{}
-		const address = "github.com:443"
+		const address = "cloudflare.com:443"
 
 		server := &Server{
 			dialer: dialer,