Gitlab Pipeline Job is not finding webpack - ruby-on-rails

Question

The project was recently updated from Ruby 3.0.1 and Rails 6.1.4 to Ruby 3.1.1 and Rails 7.0.2.
All tests pass in my local dev environment. I can't get the CI Pipeline to work. I'm using the Cloud version of Gitlab (Shared Gitlab? - I forget what it's called) and so I can't access the pipeline job from a command line. (I don't think).
I cleared my runner caches and made numerous changes to try and get it to work but to no avail.
Here is the CI file:
stages:
- test
- deploy
test-job:
stage: test
image: ruby:3.1
services:
- postgres:12.7
variables:
POSTGRES_USER: depot_postgresql
POSTGRES_PASSWORD: depot_postgresql
DB_USERNAME: depot_postgresql
DB_PASSWORD: depot_postgresql
DB_HOST: postgres
RAILS_ENV: test
# BUNDLE_PATH: vendor/bundle
before_script:
- gem update --system
script:
- apt-get update
- apt-get --assume-yes install sudo
- sudo apt install curl
- curl -sL https://deb.nodesource.com/setup_14.x | sudo -E bash -
- curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
- echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
- sudo apt-get update
- sudo apt-get install nodejs yarn
- node -v
- npm -v
- yarn -v
- gem install bundler -v 2.3.8
- bundle install
- bundle exec ruby -v
- bundle exec bundle version
- bundle exec rails -v
- bundle exec rails db:create db:schema:load --trace
- bundle exec rake assets:precompile
- bundle exec rails test
# - bundle exec rails test:system
The job gets to this point with no previous errors or warnings and then fails.
$ bundle exec ruby -v
ruby 3.1.1p18 (2022-02-18 revision 53f5fc4236) [x86_64-linux]
$ bundle exec bundle version
Bundler version 2.3.8 (2022-02-23 commit 4e812b9ca5)
$ bundle exec rails -v
Rails 7.0.2
$ bundle exec rails db:create db:schema:load --trace
Running via Spring preloader in process 2861
** Invoke db:create (first_time)
** Invoke db:load_config (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute db:load_config
** Execute db:create
Created database 'db/test.sqlite3'
** Invoke db:schema:load (first_time)
** Invoke db:load_config
** Invoke db:check_protected_environments (first_time)
** Invoke db:load_config
** Execute db:check_protected_environments
** Execute db:schema:load
$ bundle exec rake assets:precompile
I, [2022-03-10T19:46:45.438504 #2865] INFO -- : Writing /builds/goandgit/yumbin/public/assets/turbo-89398ded557eeb147879794d5b139c5e68c471e7ae9ee6ed32e01fb3a0798ce1.js
I, [2022-03-10T19:46:45.439116 #2865] INFO -- : Writing /builds/goandgit/yumbin/public/assets/turbo-89398ded557eeb147879794d5b139c5e68c471e7ae9ee6ed32e01fb3a0798ce1.js.gz
and so on. Then...
I, [2022-03-10T19:46:45.509345 #2865] INFO -- : Writing /builds/goandgit/yumbin/public/assets/users-04024382391bb910584145d8113cf35ef376b55d125bb4516cebeb14ce788597.css
I, [2022-03-10T19:46:45.509685 #2865] INFO -- : Writing /builds/goandgit/yumbin/public/assets/users-04024382391bb910584145d8113cf35ef376b55d125bb4516cebeb14ce788597.css.gz
Compiling...
Compilation failed:
yarn run v1.22.17
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
error Command "webpack" not found.
Cleaning up project directory and file based variables
00:01
ERROR: Job failed: exit code 1
If it is going through my public folder sequentially then it is failing in my packs/js/controllers folder perhaps specifically on this first bit of a code:
/******/ function __webpack_require__(moduleId) {
/******/
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId]) {
/******/ return installedModules[moduleId].exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ i: moduleId,
/******/ l: false,
/******/ exports: {}
/******/ };
I'm stumped.