update licence and attribution #4

	name: Docker Release

	on:
	push:
	tags:
	- 'v*'
	workflow_dispatch:
	inputs:
	tag:
	description: Git tag to release, for example v0.2.0
	required: true
	type: string

	permissions:
	contents: write

	jobs:
	release:
	name: Build, Publish, and Release
	runs-on: ubuntu-latest
	environment: dockerhub

	steps:
	- name: Determine release tag
	id: version
	run: \|
	if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
	TAG="${{ inputs.tag }}"
	else
	TAG="${{ github.ref_name }}"
	fi

	case "$TAG" in
	v*)
	VERSION="${TAG#v}"
	;;
	*)
	echo "Tag must start with v, got: $TAG" >&2
	exit 1
	;;
	esac

	echo "tag=$TAG" >> "$GITHUB_OUTPUT"
	echo "version=$VERSION" >> "$GITHUB_OUTPUT"

	- name: Check out repository
	uses: actions/checkout@v4
	with:
	ref: ${{ steps.version.outputs.tag }}

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3

	- name: Log in to Docker Hub
	uses: docker/login-action@v3
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}

	- name: Build and push Docker image
	uses: docker/build-push-action@v6
	with:
	context: .
	push: true
	build-args: \|
	APP_VERSION=${{ steps.version.outputs.version }}
	tags: \|
	worryboy/internetx-dyndns:${{ steps.version.outputs.version }}
	worryboy/internetx-dyndns:latest

	- name: Create GitHub Release
	uses: softprops/action-gh-release@v2
	with:
	tag_name: ${{ steps.version.outputs.tag }}
	generate_release_notes: true

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