build: add image-build action #1

	name: Lagoon Image Build - buildx

	on:
	push:
	branches:
	- 'gh_actions**'
	pull_request:
	branches:
	- 'gh_actions**'

	jobs:
	build:
	strategy:
	fail-fast: false
	runs-on: ubuntu-latest
	steps:
	-
	name: Checkout
	uses: actions/checkout@v4
	-
	name: Docker meta
	id: meta
	uses: docker/metadata-action@v5
	-
	name: Set up QEMU
	uses: docker/setup-qemu-action@v3
	-
	name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3
	-
	name: Login to DockerHub
	uses: docker/login-action@v3
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}
	-
	name: Login to GHCR
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: ${{ github.repository_owner }}
	password: ${{ secrets.GITHUB_TOKEN }}
	-
	name: Build
	uses: docker/bake-action@v6
	env:
	PLATFORMS: "linux/amd64,linux/arm64"
	TAG: "gh_actions"
	with:
	files: \|
	./docker-bake.hcl
	targets: default
	push: true
	set: \|
	*.cache-from=type=gha
	*.cache-to=type=gha,mode=max

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