Lock mariadb to 10.5 in examples (fix #1536) (#1539)

Signed-off-by: J0WI <J0WI@users.noreply.github.com>

.examples/docker-compose/insecure/mariadb/apache/docker-compose.yml

@@ -2,7 +2,7 @@ version: '3'
 
 services:
   db:
-    image: mariadb
+    image: mariadb:10.5
     command: --transaction-isolation=READ-COMMITTED --binlog-format=ROW
     restart: always
     volumes:

.examples/docker-compose/insecure/mariadb/fpm/docker-compose.yml

@@ -2,7 +2,7 @@ version: '3'
 
 services:
   db:
-    image: mariadb
+    image: mariadb:10.5
     command: --transaction-isolation=READ-COMMITTED --binlog-format=ROW
     restart: always
     volumes:

.examples/docker-compose/with-nginx-proxy/mariadb/apache/docker-compose.yml

@@ -2,7 +2,7 @@ version: '3'
 
 services:
   db:
-    image: mariadb
+    image: mariadb:10.5
     command: --transaction-isolation=READ-COMMITTED --binlog-format=ROW
     restart: always
     volumes:

.examples/docker-compose/with-nginx-proxy/mariadb/fpm/docker-compose.yml

@@ -2,7 +2,7 @@ version: '3'
 
 services:
   db:
-    image: mariadb
+    image: mariadb:10.5
     command: --transaction-isolation=READ-COMMITTED --binlog-format=ROW
     restart: always
     volumes: