ci: add version family (#3059)

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

.github/workflows/ci-outpost.yml

@@ -67,8 +67,8 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
       - name: prepare variables
+        uses: ./.github/actions/docker-push-variables
         id: ev
-        uses: ./.github/actions/docker-setup
         env:
           DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
       - name: Login to Container Registry
@@ -91,6 +91,7 @@ jobs:
           file: ${{ matrix.type }}.Dockerfile
           build-args: |
             GIT_BUILD_HASH=${{ steps.ev.outputs.sha }}
+            VERSION_FAMILY=${{ steps.ev.outputs.versionFamily }}
           platforms: ${{ matrix.arch }}
   build-outpost-binary:
     timeout-minutes: 120