refactor: cleanup Dockerfile #16

	name: Docker
	on:
	push:
	branches: main

	env:
	GCR_REGISTRY: gcr.io
	ACR_REGISTRY: acr.io
	DH_REGISTRY: dockerhub.io
	GH_REGISTRY: ghcr.io
	IMAGE_NAME: ${{ github.repository }}

	jobs:
	build:
	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write
	id-token: write
	steps:
	- name: Checkout Repository
	uses: actions/checkout@v2
	#- name: Install cosign
	# if: github.event_name != 'pull_request'
	# uses: sigstore/cosign-installer@main
	# with:
	# cosign-release: 'v1.4.0'
	- name: Setup Docker BuildX
	uses: docker/setup-buildx-action@v1
	with:
	driver-opts: image=moby/buildkit:master
	- name: Login Registry - ${{env.GH_REGISTRY}}
	if: github.event_name != 'pull_request'
	uses: docker/login-action@v1
	with:
	registry: ${{ env.GH_REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}
	- name: Extract Docker metadata
	id: meta
	uses: docker/metadata-action@v3
	with:
	images: ${{ env.GH_REGISTRY }}/${{ env.IMAGE_NAME }}
	tags: \|
	type=ref,event=branch
	type=ref,event=pr
	type=semver,pattern={{version}}
	type=semver,pattern={{major}}.{{minor}}
	- name: Build and push Docker image
	id: build-and-push
	uses: docker/build-push-action@v2
	with:
	context: .
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}
	#- name: Sign the published Docker image
	# if: ${{ github.event_name != 'pull_request' }}
	# env:
	# COSIGN_EXPERIMENTAL: "true"
	# run: cosign sign ${{ env.GH_REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.build-and-push.outputs.digest }}

Provide feedback