CI: add basic image build jobs #2

	---
	name: "Build Nginx image and push it to registry"

	on:
	push:
	branches:
	- 'development'
	- 'dev-update-docker'
	paths:
	- '.github/workflows/build-push-image-nginx.yml'
	- 'docker/images/nginx/**'

	jobs:
	push-image:
	if: github.repository == 'utrechtuniversity/epos-msl'
	runs-on: ubuntu-22.04
	permissions:
	contents: read
	packages: write
	steps:
	- name: Extract branch name
	shell: bash
	run: echo "branch=${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}" >> $GITHUB_OUTPUT
	id: extract_branch

	- name: Check out EPOS-MSL catalog repository
	uses: actions/checkout@v4
	with:
	path: yoda
	repository: UtrechtUniversity/epos-msl
	ref: ${{ steps.extract_branch.outputs.branch }}

	- name: Authenticate to the container registry
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and push Docker image
	uses: docker/build-push-action@v6
	with:
	context: epos-msl/docker/images/nginx
	file: epos-msl/docker/images/nginx/Dockerfile
	push: true
	tags: latest

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