Handle AWS CLI v2

.github/workflows/ci.yml

@@ -8,10 +8,14 @@ on:
 
 jobs:
   dockerhub:
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
+        os:
+          - ubuntu-20.04
+          - ubuntu-18.04
+          - ubuntu-16.04
         logout:
           - true
           - false