Add Cypress to docker/l3d#85

docs/docker/cypress/index.md

+---
+title: Docker Cypress
+repo: https://gitlab.lakedrops.com/docker/cypress
+issues: https://gitlab.lakedrops.com/docker/cypress/-/issues
+tags:
+- docker
+- cypress
+- tests
+---
+# Cypress
+
+ This Docker project contains the testing tool [Cypress](https://cypress.io/). 
+ You will find the official documentation [here](https://docs.cypress.io/guides/overview/why-cypress).
+We recommend using [Docker for Drupal](omposer/plugin/d4d/) to install cypress, so you will benefit form the great
+and easy Drupal integration. You also get the corresponding [Ahoy](composer/plugin/ahoy/) commands out of the box.
+Make sure the Docker container inside [l3D](docker/l3d/) for Drupal are running, and you can start Cypress by
+
+```cypress
+a cypress on
+```
+
+The container starts, and you will see the Cypress UI in a few seconds:
+
+![Screenshot](/files/screenshots/cypress_start_screen.png)
+
+

docs/docker/index.md

@@ -5,4 +5,9 @@ tags:
 ---
 # Docker
 
-For full documentation visit [mkdocs.org](https://mkdocs.org).
+LakeDrops provides several very useful Docker projects you can install. In all projects we have a `Dockerfile`,
+you can execute out of the box.
+
+## Requirements
+
+Of course, you have to install [Docker](https://docs.docker.com/get-docker/) on your machine. That is all you need.

mkdocs.yml

@@ -88,6 +88,8 @@ nav:
           - docker/alerta-proxy/index.md
       - Ansible:
           - docker/ansible/index.md
+      - Cypress:
+          - docker/cypress/index.md
       - GitLab Drupal CI:
           - docker/gitlab-drupal-ci/index.md
           - Changelog: docker/gitlab-drupal-ci/changelog.md