added GH workflow to build multiarch images on tag push (#15) #1

	name: Build and Publish Multi-arch Docker Image

	on:
	push:
	tags:
	- '*'

	jobs:
	build-and-publish:
	runs-on: ubuntu-latest

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

	- name: Set up QEMU
	uses: docker/setup-qemu-action@v3

	- name: Set up Docker Buildx
	uses: docker/[email protected]

	- name: Login to GitHub Container Registry
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and Push Docker Image
	run: \|
	docker buildx build \
	-t ghcr.io/canonical/api_demo_server:${{ github.ref_name }} \
	--platform linux/amd64,linux/arm64,linux/ppc64le \
	--push .

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