Expand README

Signed-off-by: Michal Czyz <[email protected]>

.devcontainer/README.md

@@ -9,12 +9,13 @@ The goal is to provide a web browser experience of the OpenROAD GUI. Solution wo
 3. Open VSCode and install the [GitHub Codespaces](https://marketplace.visualstudio.com/items?itemName=GitHub.codespaces) extension
 4. Connect to the generated codespace
 5. Open a web browser and connect to url: `localhost:6080`
-6. Alternatively, you can use a VNC client to connect to `localhost:5980`
+6. Alternatively, you can use a VNC client to connect to `localhost:5901`
 
 ## Developer
 
 OpenROAD Flow Scripts provide a docker image generation script `etc/DockerHelper.sh`, which is used here to build and publish the image to GH registry.
 
 Useful resources:
 * [Development loop](https://code.visualstudio.com/docs/devcontainers/create-dev-container#_full-configuration-edit-loop)
-* [devcontainer json reference](https://containers.dev/implementors/json_reference/)
+* [devcontainer JSON reference](https://containers.dev/implementors/json_reference/)
+* [Desktop lite feature](https://github.com/microsoft/vscode-dev-containers/blob/main/script-library/docs/desktop-lite.md)

.devcontainer/ubuntu2204-gui/devcontainer.json

@@ -1,12 +1,20 @@
 {
     "image": "ghcr.io/antmicro/openroad-flow-scripts/ubuntu22.04:latest",
     "features": {
-      "ghcr.io/devcontainers/features/desktop-lite:1": {}
-    },
-    "forwardPorts": [6080],
-    "portsAttributes": {
-      "6080": {
-        "label": "desktop"
+      "desktop-lite": {
+          "password": "vscode",
+          "webPort": "6080",
+          "vncPort": "5901"
       }
     }
+    // "features": {
+    //   "ghcr.io/devcontainers/features/desktop-lite:1": {}
+    // },
+    // "forwardPorts": [6080, 5901],
+    // "portsAttributes": {
+    //   "6080": {
+    //     "label": "desktop"
+    //   }
+    // }
+
 }