[#61664] WIP: devcontainer.json: Update image #50

	name: Prebuild lxqt docker image
	on:
	push:
	pull_request:
	branches:
	- main
	workflow_dispatch:

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}

	jobs:
	build:
	name: BUILD
	runs-on: ubuntu-22.04
	timeout-minutes: 600
	steps:
	- uses: actions/checkout@v4

	- name: Set environment variables
	run: echo "IMAGE=ghcr.io/$(echo ${{ github.repository }} \| tr '[:upper:]' '[:lower:]'):lxqt" >> $GITHUB_ENV

	- name: Build LXQt
	run: \|
	docker build -t ${{ env.IMAGE }} -f tools/codespace/Dockerfile-lxqt .

	- name: Login to GitHub Container Registry (GHCR)
	if: github.event_name != 'pull_request'
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: gha
	password: ${{ github.token }}

	- name: Push container image to GitHub Container Registry (GHCR)
	if: github.event_name != 'pull_request'
	run: docker push ${{ env.IMAGE }}

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