diff --git a/.gitea/workflows/build.yaml b/.gitea/workflows/build.yaml
index 4ca6daf..ab7b9d4 100644
--- a/.gitea/workflows/build.yaml
+++ b/.gitea/workflows/build.yaml
@@ -35,8 +35,9 @@ jobs:
             echo "IMAGE_TAG=${IMAGE_BASE}:${TAG_NAME}" >> $GITHUB_OUTPUT
             echo "PUSH_LATEST=true" >> $GITHUB_OUTPUT
           elif [[ "${{ gitea.ref_name }}" == "main" ]]; then
-            # Main branch - use commit SHA and latest
-            echo "IMAGE_TAG=${IMAGE_BASE}:${{ gitea.sha_short }}" >> $GITHUB_OUTPUT
+            # Main branch - use commit SHA (shortened to 7 chars) and latest
+            SHORT_SHA=$(echo "${{ gitea.sha }}" | cut -c1-7)
+            echo "IMAGE_TAG=${IMAGE_BASE}:${SHORT_SHA}" >> $GITHUB_OUTPUT
             echo "PUSH_LATEST=true" >> $GITHUB_OUTPUT
           else
             # Other branches - use branch name