Error parsing complex Dockerfile FROM statement.

[mmx86]

ARG DOCKER_REGISTRY
FROM ${DOCKER_REGISTRY:+${DOCKER_REGISTRY}/}python:3.10-buster
...

Build results in:

getting hash for artifact "dsp-test": getting dependencies for "dsp-test": parsing ONBUILD instructions: retrieving image "${DOCKER_REGISTRY:/}python:3.10-buster": parsing reference "${DOCKER_REGISTRY:/}python:3.10-buster": could not parse reference: ${DOCKER_REGISTRY:/}python:3.10-buster

Information

• Skaffold version: v2.6.3
• Operating system: ArchLinux
• Installed via: pacman
• Contents of skaffold.yaml:

apiVersion: skaffold/v4beta6
kind: Config
metadata:
  name: dsp

build:
  artifacts:
    - context: ../dsp-test
      image: dsp-test
  local:
    push: false

Steps to reproduce the behavior

skaffold build