Replace Docker with Podman in AWS CLI aliases.

.aws/cli/alias

@@ -2,7 +2,7 @@
 
 whoami = sts get-caller-identity
 region = configure get region
-ecr-login = !aws ecr get-login-password | docker login --username AWS --password-stdin "$(aws whoami --query "Account" --output text).dkr.ecr.$(aws region).amazonaws.com"
+ecr-login = !aws ecr get-login-password | podman login --username AWS --password-stdin "$(aws whoami --query "Account" --output text).dkr.ecr.$(aws region).amazonaws.com"
 metadata-region = !python3 << EOF
     from urllib.request import urlopen
     import json