Nginx version has been bumped.

compose/indeed/docker-compose.yaml

@@ -2,7 +2,7 @@ version: '3.5'
 
 services:
   proxy:
-    image: 'nginx:1.15.5-alpine'
+    image: 'nginx:1.15.6-alpine'
     ports:
       - '80:80'
       - '443:443'
@@ -14,7 +14,7 @@ services:
       - './proxy/nginx.conf:/etc/nginx/conf.d/default.conf:ro'
 
   apt:
-    image: 'nginx:1.15.5-alpine'
+    image: 'nginx:1.15.6-alpine'
     volumes:
       - './apt/nginx.conf:/etc/nginx/conf.d/default.conf:ro'
       - './apt/repo/:/var/www/:ro'