Feature/ruby 3 4 10 #193

	name: Build and Publish
	on:
	push:
	branches: [main]
	tags: ['*']
	pull_request:
	branches: [main]

	jobs:

	lint:
	name: Lint Dockerfile
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v6
	- run: npm i
	- run: npm test

	build_and_publish:
	needs: lint
	name: Build and publish Docker image
	runs-on: ubuntu-latest
	permissions:
	contents: read
	steps:
	- uses: actions/checkout@v6

	- name: Set up QEMU
	uses: docker/setup-qemu-action@v4

	- name: Set up Buildx
	uses: docker/setup-buildx-action@v4

	- name: Docker login
	uses: docker/login-action@v4
	with:
	username: ${{ secrets.DOCKER_USERNAME }}
	password: ${{ secrets.DOCKER_ACCESS_TOKEN }}

	- name: Compute tags
	id: meta
	uses: docker/metadata-action@v6
	with:
	images: savingsutd/gcp-ruby
	tags: \|
	type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}
	type=ref,event=tag

	- name: Build amd64 for smoke tests
	uses: docker/build-push-action@v7
	with:
	context: .
	platforms: linux/amd64
	load: true
	tags: gcp-ruby:test
	cache-from: type=gha
	cache-to: type=gha,mode=max

	- name: Smoke test binaries
	run: \|
	for bin in ruby bundle gcloud node yarn google-chrome docker; do
	docker run --rm gcp-ruby:test bash -c "which $bin" \|\| exit 1
	done

	- name: Build and push multi-arch
	if: github.ref == 'refs/heads/main' \|\| startsWith(github.ref, 'refs/tags/')
	uses: docker/build-push-action@v7
	with:
	context: .
	platforms: linux/amd64,linux/arm64
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}
	cache-from: type=gha
	cache-to: type=gha,mode=max

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