context directories with backslashes on Windows do not work

[briandealwis]

From StackOverflow where a user was attempting to build a project from skaffold init on Windows

Expected behavior

skaffold init generated a skaffold.yaml with paths containing backslashes. Such paths should cause no problems as YAML does not interpret backslashes in an unquoted scalar, and Skaffold should accept backslash paths on Windows.

build:
  artifacts:
  - image: testmicro
    context: src\Microservices
    docker:
      dockerfile: TestMicro\Dockerfile

Actual behavior

@penguinflip: [...] Interestingly, the init script added the slashes the wrong way - src\Microservices\TestMicro (I guess because I'm on Windoze). Copying your code exactly worked, but it doesn't with the slashes reversed. This may be a bug with skaffold init...

Information

skaffold.yaml was generated by skaffold init.

• Skaffold version: 1.15.0 (since generated skaffold.yaml has v2beta8)
• Operating system: Windows
• Contents of skaffold.yaml:

apiVersion: skaffold/v2beta8
kind: Config
metadata:
  name: microservices-investigation
build:
  artifacts:
  - image: testmicro
    context: src\Microservices
    docker:
      dockerfile: TestMicro\Dockerfile
deploy:
  kubectl:
    manifests:
    - k8s/TestMicro.yaml