init with s6

Deployments/firefox.yaml

@@ -39,15 +39,9 @@ spec:
               mountPath: /config
             - name: dshm
               mountPath: /dev/shm
-      initContainers:
-        - name: init-xrdp
-          image: busybox:1.28
-          command:
-            [
-              "sh",
-              "-c",
-              "sed -i 's/;ListenAddress.*/ListenAddress=127.0.0.1/' /etc/xrdp/sesman.ini",
-            ]
+            - mountPath: /custom
+              name: config
+              readOnly: true
 
       volumes:
         - name: vol
@@ -55,6 +49,12 @@ spec:
         - name: dshm
           emptyDir:
             medium: Memory
+        - name: config
+          configMap:
+            name: firefox-edit
+            items:
+              - key: "settings"
+                path: "edit"
 ---
 apiVersion: v1
 kind: Service
@@ -70,3 +70,14 @@ spec:
       nodePort: 30104
   selector:
     app: firefox
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: firefox-edit
+data:
+  settings: |
+    #!/usr/bin/with-contenv bash
+    #shellcheck shell=bash
+
+    sed -i 's/;ListenAddress.*/ListenAddress=127.0.0.1/' /etc/xrdp/sesman.ini