Update README.md #17

	---

	name: Build docker image- backend application

	on:
	push:
	branches:
	- main
	# trigger events for SemVer like tags
	tags:
	# match e.g. 1.1.1 and 1.1.1-rc1
	- '[0-9]+.[0-9]+.[0-9]+'
	- '[0-9]+.[0-9]+.[0-9]+-*'
	pull_request:
	branches:
	- main


	jobs:
	build-docker-images-backend:
	runs-on: ubuntu-latest
	permissions:
	packages: write

	steps:
	- name: Checkout
	uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7

	# Needed to create multi-platfrom image
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@988b5a0280414f521da01fcc63a27aeeb4b104db # v3.6.1

	# Needed to create multi-platfrom image
	- name: Set up QEMU
	uses: docker/setup-qemu-action@49b3bc8e6bdd4a60e6116a5414239cba5943d3cf # v3.2.0

	# Create SemVer or ref tags dependent of trigger event
	- name: Docker meta
	id: meta
	uses: docker/metadata-action@8e5442c4ef9f78752691e2d8f8d19755c6f78e81 # v5.5.1
	with:
	images: \|
	${{ env.IMAGE_NAMESPACE }}/${{ env.IMAGE_NAME }}
	tags: \|
	# set latest tag for main branch
	type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }},event=pr
	type=ref,event=branch
	type=ref,event=pr
	type=semver,pattern={{version}}
	type=semver,pattern={{major}}
	type=semver,pattern={{major}}.{{minor}}

	- name: Build and push
	uses: docker/build-push-action@5cd11c3a4ced054e52742c5fd54dca954e0edd85 # v6.7.0
	with:
	context: .
	file: ./edc-chat-app-backend/Dockerfile
	platforms: linux/amd64, linux/arm64
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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