Merge branch '2.6.x' into 2.7.x

Closes gh-32890

Author: wilkinsona

ci/images/get-docker-url.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
 set -e
 
-version="20.10.20"
+version="20.10.21"
 echo "https://download.docker.com/linux/static/stable/x86_64/docker-$version.tgz";