image:
  name: hashicorp/packer:light
  entrypoint: [""]

variables:
  PACKER_LOG: 1          # enable detailed logging
  PACKER_VAR_FILE: "vars.pkrvars.hcl"

stages:
  - validate
  - build

.parallel:
  parallel:
    matrix:
      - IMAGE: [ "flatcar" ]

validate:
  extends: .parallel
  stage: validate
  variables:
    PACKER_WORKSPACE: images/$IMAGE
  script:
    - packer init $PACKER_WORKSPACE
    - packer fmt -check $PACKER_WORKSPACE
    - packer validate $PACKER_WORKSPACE

build-image:
  extends: .parallel
  stage: build
  variables:
    PACKER_FILE: images/$IMAGE/image.pkr.hcl
  script:
    - |
      packer build \
        $PACKER_FILE
  rules:
    - if: $CI_COMMIT_BRANCH == "main"