constellation/.github/actions/container_registry_login/action.yml

name: Create container registry login credentials file
description: Delete previously created IAM configuration.

inputs:
  registry:
    description: "Container registry to use"
    required: true
  username:
    description: "Username used for authentication."
    required: true
  password:
    description: "Password used for authentication."
    required: true

runs:
  using: "composite"
  steps:
    - name: Use docker for logging in
      if: runner.os != 'macOS'
      uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0
      with:
        registry: ${{ inputs.registry }}
        username: ${{ inputs.username }}
        password: ${{ inputs.password }}

    - name: Manually create docker config.json
      if: runner.os == 'macOS'
      shell: bash
      env:
        REGISTRY: ${{ inputs.registry }}
        USERNAME: ${{ inputs.username }}
        PASSWORD: ${{ inputs.password }}
      run: |
        mkdir -p ~/.docker
        echo "{\"auths\":{\"${REGISTRY}\":{\"username\":\"${USERNAME}\",\"password\":\"${PASSWORD}\"}}}"  | tee ~/.docker/config.json