Merge pull request #1076 from strapi/dev/mongo-callout

MongoDB not supported callout

Author: stb13579

Diff for: docs/developer-docs/latest/setup-deployment-guides/installation/cli.md

@@ -21,6 +21,10 @@ A database is also required for any Strapi project. Strapi currently supports th
 | MySQL      | 5.7.8           |
 | MariaDB    | 10.2.7          |
 
+::: caution
+Strapi v4 does not support MongoDB.
+:::
+
 ## Creating a Strapi project
 
 ::: strapi CLI installation options