add missing cachet_ver #5

	---
	name: Build and push Docker Image on Tag

	on:
	push:
	tags:
	- 'v[0-9]+.[0-9]+.[0-9]'

	jobs:
	pre_build:
	runs-on: ubuntu-latest
	outputs:
	tag: ${{ steps.tag.outputs.tag }}
	suffix: ${{ steps.tag.outputs.suffix }}
	steps:
	- name: Filter Tag name
	uses: olegtarasov/[email protected]
	id: tag
	with:
	tagRegex: "(?<tag>[0-9]+.[0-9]+.[0-9])(?<suffix>.*)"
	build_and_push:
	needs: pre_build
	uses: hpi-schul-cloud/infra-tools/.github/workflows/build-and-push.yaml@master
	with:
	registry: ghcr.io
	image: dbildungsplattform/cachet
	tag: ${{ needs.pre_build.outputs.tag }}
	prefix: v
	suffix: ${{ needs.pre_build.outputs.suffix }}

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