build

Update dockerfile #59

	name: build

	# Build and test the NautilusTrader example data image

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	jobs:
	docker-image:
	runs-on: ubuntu-latest
	steps:
	- name: Set up QEMU
	# https://github.com/docker/setup-qemu-action
	uses: docker/setup-qemu-action@29109295f81e9208d7d86ff1c6c12d2833863392 # v3.6.0

	- name: Set up Docker Buildx
	# https://github.com/docker/setup-buildx-action
	uses: docker/setup-buildx-action@b5ca514318bd6ebac0fb2aedd5d36ec1b5c232a2 # v3.10.0

	- name: Login to GHCR
	# https://github.com/docker/login-action
	uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
	with:
	registry: ghcr.io
	username: ${{ github.repository_owner }}
	password: ${{ secrets.PACKAGES_TOKEN }}

	- name: Get branch name
	id: branch-name
	run: \|
	echo "current_branch=${GITHUB_REF#refs/heads/}" >> $GITHUB_OUTPUT

	- name: image name
	run: echo ghcr.io/${{ github.repository }}:${{ steps.branch-name.outputs.current_branch }}

	- name: Build backend
	id: docker_build
	# https://github.com/docker/build-push-action
	uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4 # v6.15.0
	with:
	file: "Dockerfile"
	push: true
	tags: ghcr.io/${{ github.repository }}:${{ steps.branch-name.outputs.current_branch }}
	cache-from: type=gha
	cache-to: type=gha

	- name: Image digest
	run: echo ${{ steps.docker_build.outputs.digest }}

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