diff --git a/src/docker.js b/src/docker.js
index 4fd093d1b..0fb4be720 100644
--- a/src/docker.js
+++ b/src/docker.js
@@ -339,6 +339,8 @@ function createSubcontainer(app, name, cmd, options, callback) {
             if (isAppContainer) {
                 containerOptions.Hostname = app.id;
                 containerOptions.HostConfig.NetworkMode = 'cloudron'; // user defined bridge network
+                containerOptions.HostConfig.Dns = ['172.18.0.1']; // use internal dns
+                containerOptions.HostConfig.DnsSearch = ['.']; // use internal dns
 
                 containerOptions.NetworkingConfig = {
                     EndpointsConfig: {
diff --git a/src/infra_version.js b/src/infra_version.js
index c38e227f5..5d1861778 100644
--- a/src/infra_version.js
+++ b/src/infra_version.js
@@ -6,7 +6,7 @@
 
 exports = module.exports = {
     // a version change recreates all containers with latest docker config
-    'version': '48.17.1',
+    'version': '48.18.0',
 
     'baseImages': [
         { repo: 'cloudron/base', tag: 'cloudron/base:2.0.0@sha256:f9fea80513aa7c92fe2e7bf3978b54c8ac5222f47a9a32a7f8833edf0eb5a4f4' }