Merge pull request #9494 from ryanpetrello/older-install-instructions…

…-warning

point people at install instructions for older stable releases

Reviewed-by: https://github.com/apps/softwarefactory-project-zuul

INSTALL.md

@@ -15,6 +15,11 @@ Table of Contents
 
 # Installing AWX
 
+:warning: NOTE |
+--- |
+If you're installing an older release of AWX (prior to 18.0), these instructions have changed.  Take a look at your version specific instructions, e.g., for AWX 17.0.1, see: [https://github.com/ansible/awx/blob/17.0.1/INSTALL.md](https://github.com/ansible/awx/blob/17.0.1/INSTALL.md)
+If you're attempting to migrate an older Docker-based AWX installation, see: [Migrating Data from Local Docker](https://github.com/ansible/awx/blob/devel/tools/docker-compose/docs/data_migration.md) |
+
 ## The AWX Operator
 
 Starting in version 18.0, the [AWX Operator](https://github.com/ansible/awx-operator) is the preferred way to install AWX.