2 arguments required, but only 1 is mandatory in GHA code

[Anderson Leite]

Description

I'm trying to use the apko-publish action, with almost all fields using default values, like:

      - uses: distroless/actions/apko-publish@main
        with:
          # Config is the configuration file to use for the image build.
          # Optional, will use .apko.yaml without a defined one.
          # config: .apko.yaml
          # Tag is the tag that will be published.
          # Required.
          tag: ${{ env.IMAGE_TAG }}
          # Image Refs is the path to a file where apko should emit a newline
          # delimited list of published image digests.
          # Optional, will use a temporary file when unspecified.
          # image_refs: foo.images
          # Enable debug while testing
          debug: true
          generic-user: ${{ env.ACR_USERNAME }}
          generic-pass: ${{ secrets.ACR_PASSWORD }}

From what I can see in the apko-publish/action.yaml file the only required parameter is tag, but when running it, I get the following error:

Error: requires at least 2 arg(s), only received 1
2023/04/26 09:45:07 error during command execution: requires at least 2 arg(s), only received 1

The complete run log shows like this:

Run distroless/actions/apko-publish@main
  with:
    debug: true
    generic-user: <redacted>
    generic-pass: <redacted>
    config: .apko.yaml
    repository_owner: <redacted>
    repository: <redacted>
    token: ***
    image_refs: /tmp/apko.images
    automount-src: /home/runner/work/docker/docker/.apko-automount
    automount-dest: /work
    package-version-tag-stem: false
  env:
    ACR_REGISTRY: <redacted>
    ACR_USERNAME: <redacted>
    DOCKER_DIR: core-openjdk/6.0.0-17-new-relic-8.1.0
    VERSION_NUMBER: 6
    IMAGE_TAGS: <redacted>/core-openjdk:6.0.0-17-new-relic-8.1.0,<redacted>/core-openjdk:6
/usr/bin/docker run --name ghcriowolfidevapkolatest_e54c1c --label 6c044[2](https://github.com/<redacted>/docker/actions/runs/4807250722/jobs/8555772578#step:5:2) --workdir /github/workspace --rm -e "ACR_REGISTRY" -e "ACR_USERNAME" -e "DOCKER_DIR" -e "VERSION_NUMBER" -e "IMAGE_TAGS" -e "INPUT_TAG" -e "INPUT_DEBUG" -e "INPUT_GENERIC-USER" -e "INPUT_GENERIC-PASS" -e "INPUT_CONFIG" -e "INPUT_REPOSITORY_OWNER" -e "INPUT_REPOSITORY" -e "INPUT_TOKEN" -e "INPUT_IMAGE_REFS" -e "INPUT_STAGE_TAGS" -e "INPUT_KEYRING-APPEND" -e "INPUT_REPOSITORY-APPEND" -e "INPUT_ARCHS" -e "INPUT_BUILD-OPTIONS" -e "INPUT_SOURCE-DATE-EPOCH" -e "INPUT_USE-DOCKER-MEDIATYPES" -e "INPUT_AUTOMOUNT-SRC" -e "INPUT_AUTOMOUNT-DEST" -e "INPUT_PACKAGE-VERSION-TAG" -e "INPUT_PACKAGE-VERSION-TAG-STEM" -e "INPUT_PACKAGE-VERSION-TAG-PREFIX" -e "INPUT_TAG-SUFFIX" -e "INPUT_SBOM-PATH" -e "GITHUB_ACTOR" -e "GITHUB_TOKEN" -e "REPOSITORY" -e "HOME" -e "GITHUB_JOB" -e "GITHUB_REF" -e "GITHUB_SHA" -e "GITHUB_REPOSITORY" -e "GITHUB_REPOSITORY_OWNER" -e "GITHUB_REPOSITORY_OWNER_ID" -e "GITHUB_RUN_ID" -e "GITHUB_RUN_NUMBER" -e "GITHUB_RETENTION_DAYS" -e "GITHUB_RUN_ATTEMPT" -e "GITHUB_REPOSITORY_ID" -e "GITHUB_ACTOR_ID" -e "GITHUB_TRIGGERING_ACTOR" -e "GITHUB_WORKFLOW" -e "GITHUB_HEAD_REF" -e "GITHUB_BASE_REF" -e "GITHUB_EVENT_NAME" -e "GITHUB_SERVER_URL" -e "GITHUB_API_URL" -e "GITHUB_GRAPHQL_URL" -e "GITHUB_REF_NAME" -e "GITHUB_REF_PROTECTED" -e "GITHUB_REF_TYPE" -e "GITHUB_WORKFLOW_REF" -e "GITHUB_WORKFLOW_SHA" -e "GITHUB_WORKSPACE" -e "GITHUB_ACTION" -e "GITHUB_EVENT_PATH" -e "GITHUB_ACTION_REPOSITORY" -e "GITHUB_ACTION_REF" -e "GITHUB_PATH" -e "GITHUB_ENV" -e "GITHUB_STEP_SUMMARY" -e "GITHUB_STATE" -e "GITHUB_OUTPUT" -e "RUNNER_OS" -e "RUNNER_ARCH" -e "RUNNER_NAME" -e "RUNNER_TOOL_CACHE" -e "RUNNER_TEMP" -e "RUNNER_WORKSPACE" -e "ACTIONS_RUNTIME_URL" -e "ACTIONS_RUNTIME_TOKEN" -e "ACTIONS_CACHE_URL" -e GITHUB_ACTIONS=true -e CI=true --entrypoint "/bin/sh" -v "/var/run/docker.sock":"/var/run/docker.sock" -v "/home/runner/work/_temp/_github_home":"/github/home" -v "/home/runner/work/_temp/_github_workflow":"/github/workflow" -v "/home/runner/work/_temp/_runner_file_commands":"/github/file_commands" -v "/home/runner/work/docker/docker":"/github/workspace" ghcr.io/wolfi-dev/apko:latest  "-c" "set -o errexit
set -o pipefail

if [[ \"midocker\" != \"\" && \"***\" != \"\" ]]; then
  echo \"***\" | \
    /usr/bin/apko login -u \"midocker\" \
      --password-stdin \"$(echo \"\" | cut -d'/' -f1)\"
fi

if [ -d \"/home/runner/work/docker/docker/.apko-automount\" ]; then
  echo \"Creating copy of /home/runner/work/docker/docker/.apko-automount at /work\"
  cp -r \"/home/runner/work/docker/docker/.apko-automount\" \"/work\"
fi
[ -n \"\" ] && export SOURCE_DATE_EPOCH=''
[ -n \"\" ] && keys=\"-k \"
[ -n \"\" ] && repos=\"-r \"
[ -n  \"\" ] && archs=\"--arch \"
build_options=\"\"
if [ -n \"\" ]; then
  opts=\"\"
  for opt in ${opts//,/ }; do
    build_options=\"${build_options} --build-option ${opt}\"
  done
fi

packageVersionTag=\"--package-version-tag=\"
if [ \"\" == \"\" ]; then
  repo=$(echo $REPOSITORY | cut -d'/' -f2)
  packageVersionTag=\"--package-version-tag=$repo\"
fi
packageVersionTagPrefix=\"--package-version-tag-prefix=\"

tagSuffix=\"--tag-suffix=\"
sbomPath=\"--sbom-path=\"

export DIGEST_FILE=$(mktemp)
/usr/bin/apko publish \
   \
  --package-version-tag-stem \
  '--debug' \
  --image-refs=\"/tmp/apko.images\" --stage-tags=\"\" .apko.yaml  $keys $repos $archs $build_options $packageVersionTag $packageVersionTagPrefix $tagSuffix $sbomPath | tee ${DIGEST_FILE}
echo EXIT CODE: $?
echo ::set-output name=digest::$(cat ${DIGEST_FILE})
"
202[3](https://github.com/<redacted>/docker/actions/runs/4807250722/jobs/8555772578#step:5:3)/0[4](https://github.com/<redacted>/docker/actions/runs/4807250722/jobs/8555772578#step:5:4)/26 09:4[5](https://github.com/<redacted>/docker/actions/runs/4807250722/jobs/8555772578#step:5:5):07 logged in via /github/home/.docker/config.json
Error: requires at least 2 arg(s), only received 1
2023/04/2[6](https://github.com/<redacted>/docker/actions/runs/4807250722/jobs/8555772578#step:5:6) 09:45:0[7](https://github.com/<redacted>/docker/actions/runs/4807250722/jobs/8555772578#step:5:7) error during command execution: requires at least 2 arg(s), only received 1

Any advice for how I can (try to) debug it further, or any tips of how to use it properly ?

[Patrick Flynn]

@jdolitsky may know the answer to this.

[Patrick Flynn]

FYI the actions in this repo are not intended for external users. They may break without notice and we provide no guarantees of support.

[Josh Dolitsky]

i believe your input for tag: is probably incorrect. This input name is probbaly bad on our part, but its not meant to be something like "latest" or "1.2.3", but the full image ref (e.g. ghcr.io/myorg/myrepo:latest)