ci: add docker image release #1

	# Reference from:
	# https://goreleaser.com/ci/actions/
	name: Release
	on:
	push:
	tags:
	- "v*"
	permissions:
	contents: write
	jobs:
	image-amd64:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: 1.22

	- name: Setup Docker Buildx
	uses: docker/setup-buildx-action@v3
	with:
	version: v0.11.2
	install: true

	# <--- Login, build and push image to Docker Hub --->
	- name: Login to Docker Hub
	uses: docker/login-action@v3
	with:
	username: ${{ secrets.DOCKER_USERNAME }}
	password: ${{ secrets.DOCKER_PASSWORD }}

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v5
	with:
	images: kcllang/kpt-kcl
	- name: Build and push Docker image
	uses: docker/build-push-action@v6
	with:
	context: .
	platforms: linux/amd64
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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