3 stage is work

docker-compose.yml

@@ -3,17 +3,25 @@ version: "3"
 services:
 # ----------------------------------------------
   ngx1-net1:
+    container_name: ngx1_net1
     build: 
       context: .
       args:
         NET_NAME: net_1
         CONTAINER_NAME: container_1
     ports:
-      - "8080:80"
+      - "8081:80"
+    command: >
+      bash -c "apt update
+      && apt install knockd iptables iproute2 vim curl -y
+      && /root/scripts/knocking_setup.sh && nginx && knockd -d && sleep infinity"
     networks:
       - net_1
       - net_3
+    cap_add:
+      - NET_ADMIN
   ngx2-net1:
+    container_name: ngx2_net1
     build: 
       context: .
       args:
@@ -23,31 +31,40 @@ services:
       - net_1
 # ----------------------------------------------
   ngx1-net2:
+    container_name: ngx1_net2
     build:
       context: .
       args:
         NET_NAME: net_2
         CONTAINER_NAME: container_1
     ports:
-      - "8081:80"
+      - "8082:80"
+    command: >
+      bash -c "apt update
+      && apt install knockd iptables iproute2 vim curl -y
+      && /root/scripts/knocking_setup.sh && nginx && knockd -d && sleep infinity"
     networks:
       - net_2
       - net_3
+    cap_add:
+      - NET_ADMIN
   ngx2-net2:
+    container_name: ngx2_net2
     build:
       context: .
       args:
         NET_NAME: net_2
         CONTAINER_NAME: container_2
+    restart: on-failure
     networks:
       - net_2
 # ----------------------------------------------
   visor:
+    container_name: visor
     image: ubuntu:latest
-    restart: on-failure
     command: >
       bash -c "apt update
-      && apt install iproute2 vim curl nmap -y
+      && apt install iproute2 vim curl nmap knockd -y
       && sleep infinity"
     networks:
       - net_3
@@ -56,3 +73,9 @@ networks:
   net_1:
   net_2:
   net_3:
+    driver: bridge
+    ipam:
+      driver: default
+      config:
+        - subnet: "172.28.0.0/16"
+          gateway: "172.28.0.1"