only build docker image in the right moment

Signed-off-by: Luiz Oliveira <ziuloliveira@gmail.com>

Author: Ziul

.github/workflows/build.yaml

@@ -31,6 +31,7 @@ jobs:
     name: Building
     runs-on: ubuntu-latest
     needs: [versioning, test]
+    if: github.ref_name == 'refs/heads/main' || github.event_name == 'release'
     outputs:
       version: ${{needs.versioning.outputs.FullSemVer}}
     steps: