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# Docker Compose
## Description
Docker Compose 是 Docker 官方提供的多容器 Docker 应用定义和运行工具。通过 `docker-compose.yml`(或 `compose.yaml`)配置文件,使用 YAML 格式声明式定义多容器服务的网络、卷、端口映射、环境变量等,实现一键部署复杂应用。
## Version
- **V1 (独立包)**`docker-compose` 命令(已弃用)
- **V2 (插件)**`docker compose` 命令(当前主流),通过 `docker-compose-plugin` 包安装,集成到 Docker CLI
## V1 vs V2 Command Reference
| V1 (独立包) | V2 (插件) |
|------------|-----------|
| `docker-compose up -d` | `docker compose up -d` |
| `docker-compose ps` | `docker compose ps` |
| `docker-compose down` | `docker compose down` |
| `docker-compose -f xxx.yml config` | `docker compose -f xxx.yml config` |
## Core Concepts
- **Services**: 定义每个容器服务(镜像、构建、端口、卷、环境变量)
- **Volumes**: 命名数据卷,持久化容器数据
- **Networks**: 容器网络配置bridge、host、overlay
- **Version**: `version: '3.8'` 为当前主流版本规范
## Example
```yaml
version: '3.8'
services:
it-tools:
image: corentinth/it-tools:latest
container_name: it-tools
restart: unless-stopped
stdin_open: true
tty: true
ports:
- "8999:80"
deploy:
resources:
limits:
memory: 128M
```
## Used By
- [[用docker安装it-tools]]
- [[用docker安装transmission]]
- [[Navidrome]]
- [[Jellyfin]]
- [[RSSHub]]
## Related Concepts
- [[Docker-Image]]
- [[Docker-Save]]
- [[Docker-Load]]
- [[容器资源限制]]
- [[容器重启策略]]
- [[端口映射]]
- [[桥接网络]]