.env: add APPLICATION variable for nginx.conf

.env

@@ -4,6 +4,7 @@ TRAEFIK_APP_NAME=
 TRAEFIK_ENTRYPOINTS=web-secure
 # TRAEFIK_ENTRYPOINTS=web-secure-ext
 WEB_HOST=
+APPLICATION=
 
 # WEB
 APP_BASE_PATH=/login

config/nginx.conf

@@ -7,7 +7,7 @@ upstream api {
 }
 
 upstream app {
-    server                       application:80;
+    server                       $APPLICATION;
 }
 
  include                         /etc/nginx/include/upstream.conf;

docker-compose.yml

@@ -41,6 +41,8 @@ services:
       file: docker-compose.traefik.yml
       service: server
     image: nginx:alpine
+    environment:
+      - APPLICATION=${APPLICATION}
     volumes:
       - ./config/nginx.conf:/etc/nginx/templates/default.conf.template
       - ./config/include:/etc/nginx/include