test: add tests for examples

[MikeMcC399]

Issue

There is no automated testing available for the set of examples in the examples directory.

Change

• Add a test script scripts/test.sh for each of the sub-directories of the examples directory
• Add a examples/test-all-examples.sh script to run all the above scripts
• Add a GitHub Actions workflow to run each of the individual test scripts

Verification

Local test

On Ubuntu 24.04.1 LTS, Node.js 22.12.0 LTS with Docker Desktop 4.37.1

git clone https://github.com/cypress-io/cypress-docker-images
cd cypress-docker-images
cd examples
./test-all-examples.sh

GitHub Actions test

Under https://github.com/cypress-io/cypress-docker-images/actions run workflow
"Example Tests"

[cypress-app-bot]

• Create a Draft Pull Request if your PR is not ready for review. Mark the PR as Ready for Review when you're ready for a Cypress team member to review the PR.

[jennifer-shehane]

I'll add these as required status checks. Thanks!

[MikeMcC399]

@jennifer-shehane

I'll add these as required status checks. Thanks!

I wasn't sure if you would want to add them as required checks, as the examples aren't essential for publication of the Cypress Docker images themselves. The actual Cypress Docker images are already fully tested in CircleCI.

You could leave the status of the GitHub workflow as information only for the moment, not required. This could be changed later if it is thought that the tests are indeed essential.