point goldilocks to v4.0.19-gpu #3

	name: Build docker image tagged

	on:
	push:
	tags:
	- 'v[0-9]+.[0-9]+.[0-9]+*' # this action will only run on tags that follow semver

	jobs:
	build-docker:
	runs-on: [self-hosted, linux, X64, hc]

	outputs:
	sha_short: ${{ steps.setvars.outputs.sha_short }}
	tag: ${{ steps.setvars.outputs.tag }}

	steps:
	- name: Checkout code
	uses: actions/checkout@v2

	- name: Submodule init
	run: \|
	git submodule init
	git submodule update

	- name: Set up QEMU
	uses: docker/setup-qemu-action@v1

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v1

	- name: Login to DockerHub
	uses: docker/login-action@v1
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}

	- name: Build and push Executor
	id: docker_build_executor
	uses: docker/build-push-action@v2
	with:
	context: .
	file: Dockerfile-GHA
	platforms: linux/amd64
	push: true
	target: executor
	tags: \|
	hermeznetwork/zkevm-prover:${{ github.ref_name }}

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