diff --git a/.forgejo/workflows/build-docker.yaml b/.forgejo/workflows/build-docker.yaml
index ee86edb..2b6d1e6 100644
--- a/.forgejo/workflows/build-docker.yaml
+++ b/.forgejo/workflows/build-docker.yaml
@@ -15,10 +15,13 @@ jobs:
       - uses: https://code.forgejo.org/actions/checkout@v4
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
+      - name: create-version-string
+        run: echo $(git rev-parse --short HEAD)-$(date --utc --iso-8601) >> $FORGEJO_OUTPUT
+      - run: echo ${{ steps.create-version-string.outputs.value }}
       - name: Build and push
         uses: docker/build-push-action@v6
         with:
           #push: true
           tags: |
             git.ratte.dev/laborratte5/linux-iso-seeder:latest
-            git.ratte.dev/laborratte5/linux-iso-seeder:$(git rev-parse --short HEAD)-$(date --utc --iso-8601)
+            git.ratte.dev/laborratte5/linux-iso-seeder:${{ steps.create-version-string.outputs.value }}