add shellcheck

Author: joecorall

.github/workflows/lint-test-build-push.yaml

@@ -11,10 +11,10 @@ jobs:
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
 
-      - uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5
-
       - uses: hadolint/hadolint-action@54c9adbab1582c2ef04b2016b760714a4bfde3cf # v3.1.0
 
+      - run: shellcheck **/*.sh
+
   build-push:
     needs: [lint-test]
     uses: libops/.github/.github/workflows/build-push-ghcr.yaml@main