ci: define env vars in file #22

	name: CI

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

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

	jobs:

	build:
	runs-on: ubuntu-latest

	permissions:
	contents: read
	packages: write

	steps:
	- uses: actions/checkout@v4.1.1

	- name: Docker Setup Buildx
	uses: docker/setup-buildx-action@v3.0.0
	with:
	buildkitd-flags: --debug

	- name: Setup Go environment
	uses: actions/setup-go@v5.0.0

	- name: Go build
	run: go build -v ./...

	- name: Go test
	run: go test -v ./...

	- name: Cache Docker layers
	uses: actions/cache@v4.0.0
	with:
	path: /tmp/.buildx-cache
	key: ${{ runner.os }}-buildx-${{ github.sha }}
	restore-keys: \|
	${{ runner.os }}-buildx-

	- name: Docker Login
	uses: docker/login-action@v3.0.0
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Docker Metadata action
	id: meta
	uses: docker/metadata-action@v5.5.0
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
	tags: \|
	type=raw,value=${{ github.run_number }}
	type=raw,value=latest
	type=sha

	- name: Build Docker image
	uses: docker/build-push-action@v5.1.0
	with:
	context: .
	file: ./Dockerfile
	tags: ${{ steps.meta.output.tags }}
	labels: ${{ steps.meta.output.labels }}
	push: ${{ github.event_name != 'pull_request' }}
	cache-from: type=local,src=/tmp/.buildx-cache
	cache-to: type=local,dest=/tmp/.buildx-cache

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