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nexus/wiki/concepts/Docker-Image.md
weishen b3b6be6114 ingest: 如何传输 Docker images 并且在另一个 Docker 安装
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---
title: "Docker Image"
type: concept
tags: [docker, container, image]
sources: [docker-images-transfer-guide, 如何传输Docker-images-并且在另一个Docker安装]
last_updated: 2026-04-17
---
## Summary
Docker ImageDocker 镜像)是容器化平台的核心概念,是一个只读模板,包含应用程序及其运行时所需的全部依赖(代码、运行时、库、环境变量、配置文件等)。
## Definition
用于创建 Docker 容器的只读模板,通过分层存储实现高效复用和传输。
## Key Attributes
- **格式**:分层文件系统
- **存储方式**:可导出为 tar 归档文件
- **复用机制**:分层存储,多个镜像可共享基础层
## Use Cases
- 应用程序打包和分发
- 跨环境部署(开发、测试、生产)
- 离线环境镜像迁移
## Related Concepts
- [[Docker]]:容器化平台
- [[Docker-Save]]:镜像导出命令
- [[Docker-Load]]:镜像导入命令
## Connections
- [[Docker]] ← 包含 ← [[Docker-Image]]
- [[Docker-Image]] ← 可导出为 ← [[Docker-Save]]
- [[Docker-Image]] ← 可导入为 ← [[Docker-Load]]