short sha attempt

.gitea/workflows/build-and-publish.yaml

@@ -11,6 +11,10 @@ jobs:
     steps:
       - name: checkout repo
         uses: actions/checkout@v4
+      - name: set short sha
+        run: echo "SHORT_SHA=$(echo ${{ gitea.sha }} | cut -c1-12)" >> $GITHUB_ENV
+      - name: check short sha
+        run: echo "${{ env.SHORT_SHA }}"
       - name: build image
         run: |
           docker buildx build --platform linux/amd64 \