Install Instructions reference broken workshop

[ptinsley]

Description

Install Instructions reference broken workshop

Category

This is an issue with:

• errata (error in doc content)
• new doc (requires a completely new doc)
• update (add missing or refresh existing content)
• improvement (improve docs content or format)

Affected pages

https://docs.sensu.io/sensu-go/latest/operations/deploy-sensu/install-sensu/

Expected behavior

Sensu Go install instructions either don't reference the workshop or the workshop works.

Current behavior

One of the first steps (after tool install) is to run docker-compose to get a functional sensu go environment locally. This is what you get:
Error response from daemon: pull access denied for portertech/demo-app, repository does not exist or may require 'docker login': denied: requested access to the resource is denied

Corrections needed

Publish new compose files that point to images that are accessible or remove the reference to the workshop.