ENGDOCS-2620 (#23574)

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## Description

Makes legacy clear

## Related issues or tickets

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## Reviews

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- [ ] Technical review
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Author: aevesdocker

content/manuals/compose/install/standalone.md

@@ -1,12 +1,16 @@
 ---
-title: Install the Docker Compose standalone
-linkTitle: Standalone
+title: Install the Docker Compose standalone (Legacy)
+linkTitle: Standalone (Legacy)
 description: Instructions for installing the legacy Docker Compose standalone tool on Linux and Windows Server
 keywords: install docker-compose, standalone docker compose, docker-compose windows server, install docker compose linux, legacy compose install
 toc_max: 3
 weight: 20
 ---
 
+> [!WARNING]
+>
+> This install scenario is not recommended and is only supported for backward compatibility purposes.
+
 This page contains instructions on how to install Docker Compose standalone on Linux or Windows Server, from the command line.
 
 > [!WARNING]