ci: try fixup tag output

.github/actions/prepare/action.yaml

@@ -5,8 +5,8 @@ outputs:
  description: "Matrix of platforms and runner to use"
  value: ${{ steps.setup_platforms.outputs.platforms }}
  tag:
- description: "Tags for the docker image"
- value: ${{ fromJSON(steps.meta.outputs.json).tags[0] }}
+ description: "Tag for the docker image"
+ value: ${{ steps.set_tag.outputs.tag }}
 runs:
  using: "composite"
  steps:
@@ -41,10 +41,8 @@ runs:
  type=ref,event=branch
  type=ref,event=pr
  type=semver,pattern={{version}}
- - name: debug
- id: debug
+ - name: Set tag
+ id: set_tag
  shell: bash
  run: |
- echo "${{ steps.meta.outputs.tags }}"
- echo "${{ steps.meta.outputs.tags[0] }}"
- echo "${{ fromJSON(steps.meta.outputs.json).tags[0] }}"
+ echo "tag=${{ fromJSON(steps.meta.outputs.json).tags[0] }}" >> $GITHUB_OUTPUT