Replace Unit configuration with Nginx + PHP-FPM setup in Docker

- Remove outdated Unit-based Docker configuration and scripts.
- Introduce Nginx + PHP-FPM stack with environment-based configurations.
- Add custom Nginx setup for frontend-backend routing.
- Update Dockerfiles, Docker Compose, and related scripts for new architecture.

docker-compose-prod.yml

@@ -1,30 +1,47 @@
 #version: '3.7'
 services:
+  web:
+    build:
+      context: app
+      dockerfile: docker/web/Dockerfile
+      target: DEVELOP
+    depends_on:
+      - app
+    ports:
+      - ${DOCKER_WEB_PORT}:80
+    environment:
+      IS_GZIP: 1
+      # FRONTEND_PORT: ${DOCKER_WEB_PORT}
+      BACKEND_HOST: app
+      BACKEND_PORT: 9000
+      TRUSTED_PROXY_CIDR: 172.16.0.0/12
+    volumes:
+      - ./app/application/public:/usr/share/nginx/html
+      - ./app/application/storage/app/public:/usr/share/nginx/html/storage
   app:
     build:
       context: app
-      dockerfile: docker/Dockerfile
+      dockerfile: docker/php/Dockerfile
       target: PRODUCTION
     #  restart: always
     depends_on:
       - db
       - app-redis
       - captcha-app
-    ports:
-      - ${DOCKER_APP_PORT}:9000
     volumes:
       - ./app/application:/var/www/html
     environment:
       CONTAINER_ROLE: app
-      UNIT_SOURCE: "172.16.0.0/12"
+      APP_ENV: production
 
   queue:
     build:
       context: app
-      dockerfile: docker/Dockerfile
+      dockerfile: docker/php/Dockerfile
       target: PRODUCTION
     #  restart: always
     depends_on:
+      - app
       - db
       - app-redis
     environment:
@@ -35,10 +52,11 @@ services:
   scheduler:
     build:
       context: app
-      dockerfile: docker/Dockerfile
+      dockerfile: docker/php/Dockerfile
       target: PRODUCTION
     #  restart: always
     depends_on:
+      - app
       - db
       - app-redis
     environment:
@@ -75,6 +93,7 @@ services:
     image: korelf/service-captcha:0.8.2
     #  restart: always
     depends_on:
+      - captcha-app
       - db
       - captcha-redis
     environment:
@@ -84,6 +103,7 @@ services:
     image: korelf/service-captcha:0.8.2
     #  restart: always
     depends_on:
+      - captcha-app
       - db
       - captcha-redis
     environment:
@@ -95,6 +115,7 @@ services:
     image: korelf/service-captcha:0.8.2
     #  restart: always
     depends_on:
+      - captcha-app
       - db
       - captcha-redis
     environment: