阶段2（下）：运维专题 Docker/Nginx/Linux/CI-CD/Git 的课程、企业场景、面试题和可运行示例

topics/devops/docker/examples/go-api-compose/compose.yaml

@@ -0,0 +1,36 @@
+# 本地开发环境：docker compose up -d --build
+# 镜像版本仅作示例，按项目需要调整
+services:
+  api:
+    build: .
+    ports:
+      - "8080:8080"
+    environment:
+      DATABASE_URL: postgres://app:app@db:5432/app?sslmode=disable   # 服务名 db 就是主机名
+      REDIS_URL: redis://redis:6379/0
+    depends_on:
+      db:
+        condition: service_healthy   # 等数据库健康检查通过再启动
+      redis:
+        condition: service_started
+    restart: unless-stopped
+
+  db:
+    image: postgres:17
+    environment:
+      POSTGRES_USER: app
+      POSTGRES_PASSWORD: app        # 仅限本地开发；生产用密钥管理
+      POSTGRES_DB: app
+    volumes:
+      - pgdata:/var/lib/postgresql/data   # 命名卷：容器删除后数据仍在
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U app -d app"]
+      interval: 5s
+      timeout: 3s
+      retries: 10
+
+  redis:
+    image: redis:7-alpine
+
+volumes:
+  pgdata: