Merge pull request #278380 from gabesmsft/patch-2

Update java-build-environment-variables.md

Author: prmerger-automator[bot]

articles/container-apps/java-build-environment-variables.md

@@ -78,6 +78,9 @@ Here's a listing of the environment variables used to configure a Cloud Build Se
 
 ## How to configure Java build environment variables
 
+> [!NOTE]
+> To run the following CLI commands, use Container Apps extension version `0.3.47` or higher. Use the `az extension add --name containerapp --upgrade --allow-preview` command to install the latest version.
+
 You can configure Java build environment variables when you deploy Java application source code via CLI command `az containerapp up`, `az containerapp create`, or `az containerapp update`:
 
 ```azurecli