add workflow to build and push image to ghcr #1

	name: ghcr ci

	env:
	DOTNET_VERSION: '6.0.x'
	IMAGE_NAME: 'btc-rpc-proxy'

	on:
	push:
	tags:
	- v*

	jobs:
	push-image:
	runs-on: ubuntu-latest
	permissions:
	packages: write
	contents: read
	steps:
	- uses: actions/checkout@v4
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v2
	- name: Build image
	run: docker buildx build . --tag $IMAGE_NAME --label "runnumber=${GITHUB_RUN_ID}"
	- name: Log in to registry
	run: echo "${{ secrets.GITHUB_TOKEN }}" \| docker login ghcr.io -u ${{ github.actor }} --password-stdin

	- name: Push image
	run: \|
	IMAGE_ID=ghcr.io/${{ github.repository_owner }}/$IMAGE_NAME
	IMAGE_ID=$(echo $IMAGE_ID \| tr '[A-Z]' '[a-z]')
	VERSION=$(echo "${{ github.ref }}" \| sed -e 's,./$.$,\1,')
	[[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION \| sed -e 's/^v//')
	[ "$VERSION" == "main" ] && VERSION=latest
	echo IMAGE_ID=$IMAGE_ID
	echo VERSION=$VERSION
	docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
	docker push $IMAGE_ID:$VERSION
	- name: Clean up Docker images
	run: docker image prune -f

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