Update action and docs #3

	#
	name: Create and publish a Docker image with tags

	on:
	push:
	tags:
	- '*'

	env:
	REGISTRY: ghcr.io
	IMAGE_NAME: ${{ github.repository }}

	jobs:
	build-and-push-image:
	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Log in to the Container registry
	uses: docker/login-action@v3
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v5
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

	- name: Set Versions
	uses: actions/github-script@v7
	id: set_version
	with:
	script: \|
	const tag = context.ref.substring(10)
	const no_v = tag.replace('v', '')
	const dash_index = no_v.lastIndexOf('-')
	const no_dash = (dash_index > -1) ? no_v.substring(0, dash_index) : no_v
	core.setOutput('tag', tag)
	core.setOutput('no-v', no_v)
	core.setOutput('no-dash', no_dash)

	- name: Build and Push
	uses: docker/build-push-action@v6
	with:
	context: .
	push: true
	tags: \|
	${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
	${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.set_version.outputs.no-dash }}

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