Try to build codespaces docker image in this branch #22

	name: Create and publish a Codespaces Docker image

	on:
	push:
	branches:
	- master
	- asdf

	env:
	BRANCH_NAME: ${{ github.head_ref \|\| github.ref_name }}

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

	permissions:
	contents: read
	packages: write
	attestations: write
	id-token: write

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

	- name: Log in 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 (slackbot)
	id: push_slackbot
	uses: docker/build-push-action@v6
	with:
	context: .devcontainer/slackbot
	push: true
	tags: ghcr.io/tsg-ut/slackbot-codespaces-image-slackbot:${{ env.BRANCH_NAME }}
	build-args: \|
	BRANCH_NAME=${{ env.BRANCH_NAME }}

	- name: Generate artifact attestation (slackbot)
	uses: actions/attest-build-provenance@v1
	with:
	subject-name: ghcr.io/tsg-ut/slackbot-codespaces-image-slackbot
	subject-digest: ${{ steps.push_slackbot.outputs.digest }}
	push-to-registry: true

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