containers.yml - add a TODO

.github/workflows/containers.yml

@@ -52,6 +52,7 @@ jobs:
 
     # TODO - consider making these steps some kind of subroutine
     # or some other way to avoid redundant runs in the matrix
+    # consider using dependencies for that: https://stackoverflow.com/questions/58457140/dependencies-between-workflows-on-github-actions 
     steps: # TODO - exit if the change was in the path that is not a dependency
       # - name: "set APT to non-interactive"
       #   shell: bash