[BUG] Pulls Docker Image Before Any Defined Steps

Describe the bug

Why does this GitHub Action pull a Docker image before any actual defined steps in the workflow?

Its doing a pre-step of Build karancode/kustomize-github-action@master before my defined step of Checkout in my workflow.

To Reproduce

Run the workflow as usual and you will see the execution of the pre-step running before any actual steps.

Expected behavior

Only pull the Docker image in the exact step that I defined in the workflow. I am trying to authenticate with Docker Hub so the pull rate limit can be increased but the pre-step mentioned above is running first so its not logging in first.

Screenshots/Actions log

Snippet of the workflow im running:

jobs:
  test:
    name: Run Kubernetes Validation
    runs-on: [self-hosted, linux]

    steps:
    - name: Checkout
      uses: actions/checkout@master

    - name: Login to Docker Hub
      uses: docker/login-action@v2
      with:
        username: ${{ secrets.DOCKERHUB_USERNAME }}
        password: ${{ secrets.DOCKERHUB_PASSWORD }}

   # ...

    - name: Run Kustomize Build Validation
      uses: karancode/kustomize-github-action@master
      with:
        kustomize_version: '3.0.0'
        kustomize_build_dir: 'kustomize'
        kustomize_build_options: "--load_restrictor none"
      env:
        GITHUB_ACCESS_TOKEN: ${{ secrets.GITHUB_ACCESS_TOKEN }}

Notice in the below screenshot that there are steps of building a kustomize Docker image BEFORE the Checkout step runs and then following the Login to Docker Hub step, etc..

Running on:

OS: ubuntu-latest

Additional context

karancode / kustomize-github-action

[BUG] Pulls Docker Image Before Any Defined Steps #43