Add (or update) GitHub Action (GHA) files and related config. #1

	---
	name: Dockerfile Quality Assistance

	on:
	# This event occurs when there is activity on a pull request. The workflow
	# will be run against the commits, after merge to the target branch (main).
	- pull_request:
	branches: [ main ]
	paths:
	- 'Dockerfile'
	types: [ opened, reopened, synchronize ]
	# This event occurs when there is a push to the repository.
	- push:
	paths:
	- 'Dockerfile'
	# Allow manually triggering the workflow.
	- workflow_dispatch

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	permissions:
	# Needed to allow the "concurrency" section to cancel a workflow run.
	actions: write

	jobs:
	# 03.quality.docker.lint.yml
	lint-dockerfile:
	name: Dockerfile Linting
	runs-on: ubuntu-24.04
	steps:
	- uses: actions/checkout@v4
	- uses: docker://pipelinecomponents/hadolint
	with:
	args: >-
	hadolint

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