add support of arm64 architecture for sparkjava-mysql

Signed-off-by: Guillaume Lours <guillaume.lours@docker.com>

sparkjava-mysql/README.md

@@ -22,13 +22,21 @@ services:
     ports:
     - 8080:8080
   db:
-    image: mysql:8.0.19
+    # We use a mariadb image which support both amd64 & arm64 architecture
+    image: mariadb:10.6.4-focal
+    # If you really want to use MySQL, uncomment the following line
+    #image: mysql:8.0.27
     ...
 ```
 The compose file defines an application with two services `backend` and `db`.
 When deploying the application, docker-compose maps port 8080 of the backend service container to port 80 of the host as specified in the file.
 Make sure port 8080 on the host is not already being in use.
 
+> ℹ️ **_INFO_**  
+> For compatibility purpose between `AMD64` and `ARM64` architecture, we use a MariaDB as database instead of MySQL.  
+> You still can use the MySQL image by uncommenting the following line in the Compose file   
+> `#image: mysql:8.0.27`
+
 ## Deploy with docker-compose
 
 ```

sparkjava-mysql/docker-compose.yaml

@@ -6,7 +6,10 @@ services:
     secrets:
       - db-password
   db:
-    image: mysql:8.0.19
+    # We use a mariadb image which support both amd64 & arm64 architecture
+    image: mariadb:10.6.4-focal
+    # If you really want to use MySQL, uncomment the following line
+    #image: mysql:8.0.27
     restart: always
     secrets:
       - db-password