fix: workflow

Author: TheOutdoorProgrammer

.github/workflows/ci.yaml

@@ -32,14 +32,15 @@ jobs:
           cd lifecycle_manager
           ./build_lifecycle_manager.sh
           
-          # check if the zip file changed, if it did then the zip was rebuilt and we need to fail the build
-          # it should be checked in as part of the PR.
-          if git diff --name-only HEAD^ | grep -q 'lifecycle_manager/ec2-workerpool-lifecycle-manager.zip'; then
-            echo "Lifecycle Manager zip file has been modified, build failed."
-            exit 1
+          # Check if rebuilding the zip creates any changes (indicating the committed zip is outdated)
+          if git diff --exit-code -- ec2-workerpool-lifecycle-manager.zip; then
+            echo "Lifecycle Manager zip file is up to date with main.py changes."
           else
-            echo "Lifecycle Manager zip file has not been modified, build succeeded."
+            echo "ERROR: Lifecycle Manager zip file is not up to date!"
+            echo "The zip file in the repository doesn't match what would be generated from the current main.py."
+            echo "Please rebuild the zip file using './lifecycle_manager/build_lifecycle_manager.sh' and commit the updated zip."
+            exit 1
           fi
         else
-            echo "Lifecycle Manager main.py has not been modified, skipping zip file check."
+          echo "Lifecycle Manager main.py has not been modified, skipping zip file check."
         fi