Refactor build configuration and Dockerfile for Platypus web app server #4

	name: platypus-agent

	on:
	push:

	env:
	REGISTRY: ghcr.io
	IMAGE_NAME: ${{ github.repository }}-agent

	jobs:
	docker:
	runs-on: ubuntu-latest

	permissions:
	contents: read
	packages: write

	steps:
	-
	name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	-
	name: Docker meta
	id: meta
	uses: docker/metadata-action@v3
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
	tags: \|
	type=ref,event=branch
	type=ref,event=pr
	type=semver,pattern=v{{version}}
	type=semver,pattern=v{{major}}.{{minor}}
	type=sha,prefix=,suffix=,format=short
	-
	name: Set up QEMU
	uses: docker/setup-qemu-action@v3
	-
	name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3
	-
	name: Login to Selfhosted Docker Registry
	uses: docker/login-action@v3
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}
	-
	name: Build and push
	uses: docker/build-push-action@v6
	with:
	context: .
	file: cmd/agent/Dockerfile
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}
	annotations: ${{ steps.meta.outputs.annotations }}

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