test: FORMS-1682 install the Cypress pre-requisites (#1556)

.devcontainer/Dockerfile

@@ -1,10 +1,11 @@
 ARG VARIANT="20.18.1-bookworm"
 FROM node:${VARIANT}
 
-# not much in here, could acheive this another way for sure...
-# but this allows us a prepared place to add other things to the container OS.
-
 RUN apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get install -y \
+        # Cypress prerequisites for running in Debian containers:
+        # https://docs.cypress.io/app/get-started/install-cypress#UbuntuDebian
+        libgtk2.0-0 libgtk-3-0 libgbm-dev libnotify-dev libnss3 libxss1 \
+        libasound2 libxtst6 xauth xvfb \
         # For interactive git rebases
         vim