diff --git a/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/apache/docker-compose.yml b/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/apache/docker-compose.yml
index 3d74dd24..7e132a04 100644
--- a/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/apache/docker-compose.yml
+++ b/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/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:
@@ -20,7 +20,7 @@ services:
     build: ./app
     restart: always
     volumes:
-      - nextcloud:/var/www/html
+      - nextcloud:/var/www/html:z
     environment:
       - VIRTUAL_HOST=
       - LETSENCRYPT_HOST=
@@ -39,7 +39,7 @@ services:
     build: ./app
     restart: always
     volumes:
-      - nextcloud:/var/www/html
+      - nextcloud:/var/www/html:z
     entrypoint: /cron.sh
     depends_on:
       - db
@@ -55,8 +55,8 @@ services:
       com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy: "true"
     volumes:
       - certs:/etc/nginx/certs:ro
-      - vhost.d:/etc/nginx/vhost.d
-      - html:/usr/share/nginx/html
+      - vhost.d:/etc/nginx/vhost.d:z
+      - html:/usr/share/nginx/html:z
       - /var/run/docker.sock:/tmp/docker.sock:ro
     networks:
       - proxy-tier
@@ -65,9 +65,9 @@ services:
     image: jrcs/letsencrypt-nginx-proxy-companion
     restart: always
     volumes:
-      - certs:/etc/nginx/certs
-      - vhost.d:/etc/nginx/vhost.d
-      - html:/usr/share/nginx/html
+      - certs:/etc/nginx/certs:z
+      - vhost.d:/etc/nginx/vhost.d:z
+      - html:/usr/share/nginx/html:z
       - /var/run/docker.sock:/var/run/docker.sock:ro
     networks:
       - proxy-tier
diff --git a/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/fpm/docker-compose.yml b/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/fpm/docker-compose.yml
index 663534e7..2fbc9d05 100644
--- a/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/fpm/docker-compose.yml
+++ b/.examples/docker-compose/with-nginx-proxy/mariadb-cron-redis/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:
@@ -20,7 +20,7 @@ services:
     build: ./app
     restart: always
     volumes:
-      - nextcloud:/var/www/html
+      - nextcloud:/var/www/html:z
     environment:
       - MYSQL_HOST=db
     env_file:
@@ -48,7 +48,7 @@ services:
     build: ./app
     restart: always
     volumes:
-      - nextcloud:/var/www/html
+      - nextcloud:/var/www/html:z
     entrypoint: /cron.sh
     depends_on:
       - db
@@ -64,8 +64,8 @@ services:
       com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy: "true"
     volumes:
       - certs:/etc/nginx/certs:ro
-      - vhost.d:/etc/nginx/vhost.d
-      - html:/usr/share/nginx/html
+      - vhost.d:/etc/nginx/vhost.d:z
+      - html:/usr/share/nginx/html:z
       - /var/run/docker.sock:/tmp/docker.sock:ro
     networks:
       - proxy-tier
@@ -74,9 +74,9 @@ services:
     image: jrcs/letsencrypt-nginx-proxy-companion
     restart: always
     volumes:
-      - certs:/etc/nginx/certs
-      - vhost.d:/etc/nginx/vhost.d
-      - html:/usr/share/nginx/html
+      - certs:/etc/nginx/certs:z
+      - vhost.d:/etc/nginx/vhost.d:z
+      - html:/usr/share/nginx/html:z
       - /var/run/docker.sock:/var/run/docker.sock:ro
     networks:
       - proxy-tier
diff --git a/.examples/docker-compose/with-nginx-proxy/mariadb/apache/docker-compose.yml b/.examples/docker-compose/with-nginx-proxy/mariadb/apache/docker-compose.yml
index ace221ee..35617860 100644
--- a/.examples/docker-compose/with-nginx-proxy/mariadb/apache/docker-compose.yml
+++ b/.examples/docker-compose/with-nginx-proxy/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:
@@ -16,7 +16,7 @@ services:
     image: nextcloud:apache
     restart: always
     volumes:
-      - nextcloud:/var/www/html
+      - nextcloud:/var/www/html:z
     environment:
       - VIRTUAL_HOST=
       - LETSENCRYPT_HOST=
@@ -40,8 +40,8 @@ services:
       com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy: "true"
     volumes:
       - certs:/etc/nginx/certs:ro
-      - vhost.d:/etc/nginx/vhost.d
-      - html:/usr/share/nginx/html
+      - vhost.d:/etc/nginx/vhost.d:z
+      - html:/usr/share/nginx/html:z
       - /var/run/docker.sock:/tmp/docker.sock:ro
     networks:
       - proxy-tier
@@ -50,9 +50,9 @@ services:
     image: jrcs/letsencrypt-nginx-proxy-companion
     restart: always
     volumes:
-      - certs:/etc/nginx/certs
-      - vhost.d:/etc/nginx/vhost.d
-      - html:/usr/share/nginx/html
+      - certs:/etc/nginx/certs:z
+      - vhost.d:/etc/nginx/vhost.d:z
+      - html:/usr/share/nginx/html:z
       - /var/run/docker.sock:/var/run/docker.sock:ro
     networks:
       - proxy-tier
diff --git a/.examples/docker-compose/with-nginx-proxy/mariadb/fpm/docker-compose.yml b/.examples/docker-compose/with-nginx-proxy/mariadb/fpm/docker-compose.yml
index 69e6aaaf..98fbc0f4 100644
--- a/.examples/docker-compose/with-nginx-proxy/mariadb/fpm/docker-compose.yml
+++ b/.examples/docker-compose/with-nginx-proxy/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:
@@ -49,8 +49,8 @@ services:
       com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy: "true"
     volumes:
       - certs:/etc/nginx/certs:ro
-      - vhost.d:/etc/nginx/vhost.d
-      - html:/usr/share/nginx/html
+      - vhost.d:/etc/nginx/vhost.d:z
+      - html:/usr/share/nginx/html:z
       - /var/run/docker.sock:/tmp/docker.sock:ro
     networks:
       - proxy-tier
@@ -59,9 +59,9 @@ services:
     image: jrcs/letsencrypt-nginx-proxy-companion
     restart: always
     volumes:
-      - certs:/etc/nginx/certs
-      - vhost.d:/etc/nginx/vhost.d
-      - html:/usr/share/nginx/html
+      - certs:/etc/nginx/certs:z
+      - vhost.d:/etc/nginx/vhost.d:z
+      - html:/usr/share/nginx/html:z
       - /var/run/docker.sock:/var/run/docker.sock:ro
     networks:
       - proxy-tier
diff --git a/.examples/docker-compose/with-nginx-proxy/postgres/fpm/docker-compose.yml b/.examples/docker-compose/with-nginx-proxy/postgres/fpm/docker-compose.yml
index 7403a29c..2507a4c1 100644
--- a/.examples/docker-compose/with-nginx-proxy/postgres/fpm/docker-compose.yml
+++ b/.examples/docker-compose/with-nginx-proxy/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:
@@ -46,8 +46,8 @@ services:
       com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy: "true"
     volumes:
       - certs:/etc/nginx/certs:ro
-      - vhost.d:/etc/nginx/vhost.d
-      - html:/usr/share/nginx/html
+      - vhost.d:/etc/nginx/vhost.d:z
+      - html:/usr/share/nginx/html:z
       - /var/run/docker.sock:/tmp/docker.sock:ro
     networks:
       - proxy-tier
@@ -56,9 +56,9 @@ services:
     image: jrcs/letsencrypt-nginx-proxy-companion
     restart: always
     volumes:
-      - certs:/etc/nginx/certs
-      - vhost.d:/etc/nginx/vhost.d
-      - html:/usr/share/nginx/html
+      - certs:/etc/nginx/certs:z
+      - vhost.d:/etc/nginx/vhost.d:z
+      - html:/usr/share/nginx/html:z
       - /var/run/docker.sock:/var/run/docker.sock:ro
     networks:
       - proxy-tier