71 lines
2.1 KiB
Markdown
71 lines
2.1 KiB
Markdown
# Docker Compose
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## Description
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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。
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## Version
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- **V1 (独立包)**：`docker-compose` 命令（已弃用）
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- **V2 (插件)**：`docker compose` 命令（当前主流），通过 `docker-compose-plugin` 包安装，集成到 Docker CLI
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## V1 vs V2 Command Reference
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| V1 (独立包) | V2 (插件) |
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|------------|-----------|
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| `docker-compose up -d` | `docker compose up -d` |
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| `docker-compose ps` | `docker compose ps` |
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| `docker-compose down` | `docker compose down` |
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| `docker-compose -f xxx.yml config` | `docker compose -f xxx.yml config` |
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## Core Concepts
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- **Services**: 定义每个容器服务（镜像、构建、端口、卷、环境变量）
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- **Volumes**: 命名数据卷，持久化容器数据
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- **Networks**: 容器网络配置（bridge、host、overlay）
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- **Version**: `version: '3.8'` 为当前主流版本规范
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## Example
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```yaml
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version: '3.8'
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services:
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it-tools:
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image: corentinth/it-tools:latest
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container_name: it-tools
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restart: unless-stopped
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stdin_open: true
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tty: true
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ports:
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- "8999:80"
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deploy:
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resources:
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limits:
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memory: 128M
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```
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## Used By
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- [[用docker安装it-tools]]
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- [[用docker安装transmission]]
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- [[如何删除旧的废弃的docker-container-volume]]
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- [[Navidrome]]
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- [[Jellyfin]]
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- [[RSSHub]]
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- [[Portainer]]
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## External Mode
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Compose 文件中声明 `external: true` 可让 Docker 复用已存在的 Volume 或 Network 而非创建新的，避免重装时的命名冲突警告：
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```yaml
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volumes:
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portainer_data:
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external: true
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networks:
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portainer_network:
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external: true
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```
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## Related Concepts
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- [[Docker-Image]]
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- [[Docker-Save]]
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- [[Docker-Load]]
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- [[容器资源限制]]
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- [[容器重启策略]]
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- [[端口映射]]
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- [[桥接网络]]
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