Update 07_multi_container.md (#14234)

* Update 07_multi_container.md

Add a script that works on M1 chips for people following this guide on Apple Silicon.

* Add shell prompt, use linux/amd64

Co-authored-by: Stefan Scherer <stefan.scherer@docker.com>

get-started/07_multi_container.md

@@ -53,6 +53,18 @@ For now, we will create the network first and attach the MySQL container at star
         -e MYSQL_DATABASE=todos \
         mysql:5.7
     ```
+    
+    If you are using an ARM based chip, e.g. Macbook M1 Chips / Apple Silicon, then use this command.
+    
+    ```console
+    $ docker run -d \
+        --network todo-app --network-alias mysql \
+        --platform "linux/amd64" \
+        -v todo-mysql-data:/var/lib/mysql \
+        -e MYSQL_ROOT_PASSWORD=secret \
+        -e MYSQL_DATABASE=todos \
+        mysql:5.7
+    ```
 
     If you are using PowerShell then use this command.