Multi-Network Services

Three services across two Docker networks — internal DNS and network isolation demo

📋Configuration Files

docker-compose.yml

api-service (exposed), ping-service (internal only), isolated-service (separate network)

yaml

1services:
2  api-service:
3    build: ./api-service
4    container_name: api-service
5    ports:
6      - "3000:3000"
7    networks:
8      - app-network
9 
10  ping-service:
11    build: ./ping-service
12    container_name: ping-service
13    networks:
14      - app-network
15 
16  isolated-service:
17    build: ./ping-service
18    container_name: isolated-service
19    ports:
20      - "5000:4000"
21    networks:
22      - isolated-network
23 
24networks:
25  app-network:
26    driver: bridge
27    name: app-network
28  isolated-network:
29    driver: bridge
30    name: isolated-network

📄

Step 01

Deploy Network Demo

(01)Start all services

Linux

1docker compose up -d --build
2curl http://localhost:3000/ping   # api → ping-service via internal DNS
3curl http://localhost:5000        # isolated service only