Windows Container Executor

Please check &535 (closed) as a single source of truth for progress and roadmap of windows container exectutor.

Description

Create a new executor for Windows Containers.

Proposal

There are enough significant differences between the Linux Docker daemon and the Windows Docker daemon that it makes sense to develop Windows support as a separate executor to provide the same native Docker functionality of the existing docker executor.

Links to related issues and merge requests / references

This is a list of issues I've identified so far and started tracking in my personal fork.

• Create/Publish prebuilt image(s) to Docker Hub
• [] Update getPrebuiltImage() to find Windows Image
• Validate apps/gitlab-runner-helper builds for Windows
• Update init() in executor_docker_command to support configurable shell
• Change Docker API version to 1.24
• Update parseDeviceString() in docker_executor.go to support Windows volume mapping syntax
• Set PassFile property to false for PowerShell
• Rename executor_* files in windows_docker package
• Refactor getPrebuiltImage() to pull from Docker Hub or use configuration define local image
• Create unit tests
• Create integration tests
• Create necessary jobs in .gitlab-ci.yml
• Handle missing prebuilt image gracefully
• Determine if we need to replace gitlab-runner-cache
• Do we need to replace gitlab-runner-build with something?
• Wonkiness in Powershell script execution

#1775 - Additional context