ci: fix pipeline and put platforms variable on the correct place #13

	---
	name: "build-docker-image"

	on:
	pull_request:

	push:
	tags:
	- "v*"

	jobs:
	build-and-push:
	runs-on: ubuntu-latest

	steps:
	- name: "Checkout the repository"
	uses: actions/checkout@v4

	- name: "Extract metadata for the Docker image"
	if: github.event_name == 'push' && github.ref_type == 'tag' # Only extract metadata if we push a tag
	id: metadata_extraction
	uses: docker/metadata-action@v5
	with:
	images: ghcr.io/${{ github.repository }}

	- name: "Login to GitHub Container Registry"
	if: github.event_name == 'push' && github.ref_type == 'tag' # Only login if we push a tag
	uses: docker/login-action@v1
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: "Set up Docker Buildx"
	uses: docker/setup-buildx-action@v3

	- name: "Build and eventually push container image"
	uses: docker/build-push-action@v5
	with:
	context: .
	file: ./Dockerfile
	platforms: linux/amd64,linux/arm64
	tags: ${{ steps.metadata_extraction.outputs.tags }}
	labels: ${{ steps.metadata_extraction.outputs.labels }}
	push: ${{ github.event_name == 'push' && github.ref_type == 'tag' }} # Only push builded image if we push a tag

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