diff --git a/.examples/docker-compose/insecure/mariadb/apache/docker-compose.yml b/.examples/docker-compose/insecure/mariadb/apache/docker-compose.yml
index 18f276a2..4e755ab0 100644
--- a/.examples/docker-compose/insecure/mariadb/apache/docker-compose.yml
+++ b/.examples/docker-compose/insecure/mariadb/apache/docker-compose.yml
@@ -6,7 +6,7 @@ services:
     command: --transaction-isolation=READ-COMMITTED --binlog-format=ROW
     restart: always
     volumes:
-      - db:/var/lib/mysql
+      - db:/var/lib/mysql:z
     environment:
       - MYSQL_ROOT_PASSWORD=
     env_file:
@@ -18,7 +18,7 @@ services:
     ports:
       - 8080:80
     volumes:
-      - nextcloud:/var/www/html
+      - nextcloud:/var/www/html:z
     environment:
       - MYSQL_HOST=db
     env_file:
diff --git a/.examples/docker-compose/insecure/mariadb/fpm/docker-compose.yml b/.examples/docker-compose/insecure/mariadb/fpm/docker-compose.yml
index 70324b1e..edd8d59b 100644
--- a/.examples/docker-compose/insecure/mariadb/fpm/docker-compose.yml
+++ b/.examples/docker-compose/insecure/mariadb/fpm/docker-compose.yml
@@ -6,7 +6,7 @@ services:
     command: --transaction-isolation=READ-COMMITTED --binlog-format=ROW
     restart: always
     volumes:
-      - db:/var/lib/mysql
+      - db:/var/lib/mysql:z
     environment:
       - MYSQL_ROOT_PASSWORD=
     env_file:
@@ -16,7 +16,7 @@ services:
     image: nextcloud:fpm
     restart: always
     volumes:
-      - nextcloud:/var/www/html
+      - nextcloud:/var/www/html:z
     environment:
       - MYSQL_HOST=db
     env_file:
diff --git a/.examples/docker-compose/insecure/postgres/apache/docker-compose.yml b/.examples/docker-compose/insecure/postgres/apache/docker-compose.yml
index 8c4e8f4d..27738292 100644
--- a/.examples/docker-compose/insecure/postgres/apache/docker-compose.yml
+++ b/.examples/docker-compose/insecure/postgres/apache/docker-compose.yml
@@ -5,7 +5,7 @@ services:
     image: postgres
     restart: always
     volumes:
-      - db:/var/lib/postgresql/data
+      - db:/var/lib/postgresql/data:z
     env_file:
       - db.env
 
@@ -15,7 +15,7 @@ services:
     ports:
       - 8080:80
     volumes:
-      - nextcloud:/var/www/html
+      - nextcloud:/var/www/html:z
     environment:
       - POSTGRES_HOST=db
     env_file:
diff --git a/.examples/docker-compose/insecure/postgres/fpm/docker-compose.yml b/.examples/docker-compose/insecure/postgres/fpm/docker-compose.yml
index a64bfd5f..487b4c51 100644
--- a/.examples/docker-compose/insecure/postgres/fpm/docker-compose.yml
+++ b/.examples/docker-compose/insecure/postgres/fpm/docker-compose.yml
@@ -5,7 +5,7 @@ services:
     image: postgres
     restart: always
     volumes:
-      - db:/var/lib/postgresql/data
+      - db:/var/lib/postgresql/data:z
     env_file:
       - db.env
 
@@ -13,7 +13,7 @@ services:
     image: nextcloud:fpm
     restart: always
     volumes:
-      - nextcloud:/var/www/html
+      - nextcloud:/var/www/html:z
     environment:
       - POSTGRES_HOST=db
     env_file: