InputDigest is not supported by CustomTemplateTagger

[mikekamornikov]

Expected behavior

I expect image tag with both some custom text and input digest created with customTemplate tagPolicy

Actual behavior

$ skaffold build -p test-custom-template
creating runner: creating tagger: creating tagger: creating components: unknown component for custom template: DIGEST {GitTagger:<nil> ShaTagger:<nil> EnvTemplateTagger:<nil> DateTimeTagger:<nil> CustomTemplateTagger:<nil> InputDigest:0x7a479b8}
. If above error is unexpected, please open an issue https://github.com/GoogleContainerTools/skaffold/issues/new to report this error.

Information

• Skaffold version: v1.21.0-29-g89b83154e-dirty
• Operating system: macOS 10.15.7
• Installed via: built from master
• Contents of skaffold.yaml:

apiVersion: skaffold/v2beta14
kind: Config
profiles:
- name: test-custom-template
  build:
    tagPolicy:
      customTemplate:
        template: "release-aaa-{{.DIGEST}}"
        components:
        - name: DIGEST
          inputDigest: {}
    artifacts:
    - image: quay.io/my/project
      context: ../../..
      bazel:
        target: //project:docker.tar

Steps to reproduce the behavior

1. clone this repo and build skaffold with LOCAL=true make install
2. skaffold build -p test-custom-template
3. ...

[mikekamornikov]

@piotr-szybicki This one is related to #5192 .

[tejal29]

will be fixed by #5661