fix: set `GIT_TAG` in Makefile (#153) #36

	# Publishes the Docker image.

	name: docker

	on:
	workflow_dispatch: {}
	push:
	tags:
	- v*

	env:
	REPO_NAME: ${{ github.repository_owner }}/alphanet
	IMAGE_NAME: ${{ github.repository_owner }}/alphanet
	CARGO_TERM_COLOR: always
	DOCKER_IMAGE_NAME: ghcr.io/${{ github.repository_owner }}/alphanet
	DOCKER_USERNAME: ${{ github.actor }}

	jobs:
	build:
	name: build and push
	runs-on: ubuntu-20.04
	permissions:
	packages: write
	contents: read
	steps:
	- uses: actions/checkout@v4
	- uses: dtolnay/rust-toolchain@stable
	- uses: Swatinem/rust-cache@v2
	with:
	cache-on-failure: true
	- uses: taiki-e/install-action@cross
	- name: Log in to Docker
	run: \|
	echo "${{ secrets.GITHUB_TOKEN }}" \| docker login ghcr.io --username ${DOCKER_USERNAME} --password-stdin
	- name: Set up Docker builder
	run: \|
	docker run --privileged --rm tonistiigi/binfmt --install arm64,amd64
	docker buildx create --use --name cross-builder
	- name: Build and push image, tag as "latest"
	if: ${{ ! contains(github.event.ref, '-alpha') }}
	run: make docker-build-push-latest
	- name: Build and push image
	if: ${{ contains(github.event.ref, '-alpha') }}
	run: make docker-build-push

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