Add build arguments to Docker workflow for enhanced image metadata

- Included BUILD_DATE, VCS_REF, and VERSION as build arguments in the Docker workflow to improve image documentation and traceability.

.gitea/workflows/docker.yml

@@ -62,3 +62,7 @@ jobs:
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            BUILD_DATE=${{ github.event.head_commit.timestamp }}
+            VCS_REF=${{ github.sha }}
+            VERSION=${{ steps.meta.outputs.version }}