Use skaffold to run a test command in the cluster

skaffold-test.yaml

apiVersion: skaffold/v2beta9
kind: Config
build:
  artifacts:
  - image: skaffold-example
test:
  - image: skaffold-example
    structureTests:
      - ./test/*
  # Image is required to know when we need to rebuild these (?)
  - image: skaffold-example
    clusterCommand:
      testImage: library/golang:1.12
      command: go test
      cwd: /src/app
      sync:
        auto: {}