diff --git a/docker/tinode/Dockerfile.build b/docker/tinode/Dockerfile.build
index 249c75d..2138643 100644
--- a/docker/tinode/Dockerfile.build
+++ b/docker/tinode/Dockerfile.build
@@ -45,6 +45,7 @@ ENV MEDIA_HANDLER=fs
 ENV FS_CORS_ORIGINS='["*"]'
 ENV AWS_CORS_ORIGINS='["*"]'
 ENV SMTP_HOST_URL='http://localhost:6060'
+ENV TEL_HOST_URL='http://localhost:6060'
 ENV TLS_ENABLED=false
 ENV FCM_PUSH_ENABLED=false
 ENV FCM_INCLUDE_ANDROID_NOTIFICATION=true
@@ -68,6 +69,7 @@ WORKDIR /opt/tinode
 COPY docker/tinode/config.template .
 COPY docker/tinode/entrypoint.sh .
 COPY tinode-db/credentials.sh .
+COPY server/templ ./templ
 COPY --from=build /out/tinode .
 COPY --from=build /out/init-db .
 COPY --from=build /out/apply-hotgo-tenant-db .
diff --git a/server/main.go b/server/main.go
index c3a3430..a4514ef 100644
--- a/server/main.go
+++ b/server/main.go
@@ -491,6 +491,13 @@ func main() {
 			globals.immutableTagNS[name] = true
 		}
 
+		if len(vconf.Required) == 0 && name != "tel" {
+			// Optional product phone registration uses the tel validator even
+			// when it is not required for an auth level. Other validators stay
+			// disabled when they are not explicitly required.
+			continue
+		}
+
 		var reqLevels []auth.Level
 		for _, req := range vconf.Required {
 			lvl := auth.ParseAuthLevel(req)