wercker.yml

build:
  box: google/golang
  steps:
    - internal/docker-build:
        dockerfile: Dockerfile
        image-name: my-new-image # name used to refer to this image until it's pushed
        buildargs: "foo=val1 bar=val2"
        labels: "Label1=value1 'Three word key'=value2 Label3='Three word value'"
        extrahosts: "somehost:192.168.0.1 anotherhost:192.168.0.2"
        nocache: false # ensures RUN steps in Dockerfile are always run
        registry-auth-config: |
          {
            "https://index.docker.io/v1/": {
              "username": "$USERNAME",
              "password": "$PASSWORD"
            }
          }
    - internal/docker-push:
        image-name: my-new-image
        username: $USERNAME # Docker Hub username. When using CLI, set using "export X_USERNAME=<username>"
        password: $PASSWORD # Docker Hub password. When using CLI, set using "export X_PASSWORD=<password>"
        repository: docker.io/$USERNAME/docker-build-ubuntu1
        tag: latest