What types of Docker Runners are there?

• Docker Engine
• Docker Desktop
• Docker Swarm
• Kubernetes

Some other tools may also use Docker as the execution environment:

• GitLab Runner with executor type docker
• Jenkins with Docker plugin

Runner Type	Description	Usage
Docker Engine	Native Docker daemon running on a server.	Production systems, local development.
Docker Desktop	Docker version for desktop OS with GUI.	Local development, testing.
Docker Swarm	Built-in Docker container orchestration tool.	Cluster deployments, scaling.
Kubernetes	Powerful container orchestration platform.	Complex distributed systems, scaling.

// Example configuration of GitLab Runner using 'docker' executor
runners:
  - name: "My Docker Runner"
    url: "http://gitlab.com/"
    token: "YOUR_TOKEN"
    executor: docker
    docker:
      image: alpine:latest # Default image used
      privileged: true