Update instructions to install VSCodium

Signed-off-by: Dylan Aïssi <dylan.aissi@collabora.com>

content/guides/sdk/virtualbox.md

@@ -444,7 +444,14 @@ set up guest's display drivers]({{< ref "#installing-the-vmware-display-drivers"
 
 If required, configure the network proxy in advance.
 
-Apertis recommends VSCodium as a default IDE for all development activities in the SDK. However, VSCodium integration into Apertis is still ongoing. In the meantime, please follow the steps below to install it manually:
+Apertis recommends VSCodium as a default IDE for all development activities in the SDK. Please follow the steps below to install it manually:
+
+    $ sudo apt update && sudo apt install vscodium-ide-setup
+    $ sudo apt update && sudo apt install codium
+    $ codium
+
+For Apertis v2023, please follow these steps since `vscodium-ide-setup` is not
+available:
 
     $ sudo mkdir -p /usr/share/keyrings
     $ wget -qO - https://gitlab.com/paulcarroty/vscodium-deb-rpm-repo/raw/master/pub.gpg | gpg --dearmor | sudo dd of=/usr/share/keyrings/vscodium-archive-keyring.gpg