diff --git a/docker/ingress.yaml b/docker/ingress.yaml
deleted file mode 100644
index ba0dff8d925..00000000000
--- a/docker/ingress.yaml
+++ /dev/null
@@ -1,18 +0,0 @@
-apiVersion: extensions/v1beta1
-kind: Ingress
-metadata:
-  name: sailing-ingress
-spec:
-  rules:
-  - host: kw2019-master.ingress.fooz2kz8j4.test001.shoot.canary.k8s-hana.ondemand.com
-    http:
-      paths:
-      - backend:
-          serviceName: sailing-kw2019-master-svc
-          servicePort: 80
-  - host: kw2019.ingress.fooz2kz8j4.test001.shoot.canary.k8s-hana.ondemand.com
-    http:
-      paths:
-      - backend:
-          serviceName: sailing-kw2019-svc
-          servicePort: 80
diff --git a/docker/installCertManager b/docker/installCertManager
new file mode 100644
index 00000000000..9e34923f7e0
--- /dev/null
+++ b/docker/installCertManager
@@ -0,0 +1,3 @@
+#!/bin/bash
+helm install --name cert-manager stable/cert-manager --version v0.4.1 --set ingressShim.defaultIssuerName=letsencrypt-prod --set ingressShim.defaultIssuerKind=ClusterIssuer
+helm upgrade cert-manager stable/cert-manager