Jenkins Docker error: Invalid agent type
If you’re Jenkins Docker build jobs are failing with the following error, don’t fret, as there’s a simple fix.
Invalid agent type "docker" specified. Must be one of [any, label, none].
If you’ve hit this error, you likely have a Jenkinsfile that references a Docker container, but you haven’t installed either the Jenkins Docker plugin, or the Jenkins Docker Pipeline plugin. Just add those two Jenkins plugins and the Docker error will go away.