conf(che): start vnc from devfile

devfile.yaml

 schemaVersion: 2.1.0
 metadata:
-  name: testvnc
+  name: todolist
 components:
-  - name: testvnc
+  - name: todolist
     container:
       image: adrianstoica/it1901:latest
       memoryLimit: 3Gi
@@ -12,10 +12,30 @@ components:
           protocol: http
           targetPort: 6080
         - exposure: public
-          name: 6900-tcp
+          name: 5900-tcp
           protocol: http
-          targetPort: 6900
+          targetPort: 5900
         - exposure: public
-          name: 6901-tcp
+          name: 5901-tcp
           protocol: http
-          targetPort: 6901
\ No newline at end of file
+          targetPort: 5901
+        - exposure: public
+          name: 8080-tcp
+          protocol: http
+          targetPort: 8080
+commands:
+  - id: vncserver
+    exec:
+      component: todolist
+      commandLine: vncserver -SecurityTypes None :0
+      label: start vnc server
+  - id: screenlock
+    exec:
+      component: todolist
+      commandLine: xset s 0 0
+      label: screen lock disable
+  - id: novnc
+    exec:
+      component: todolist
+      commandLine: /opt/novnc/utils/novnc_proxy --vnc localhost:5900 --listen 6080 &
+      label: start vnc web interface