# 映像檔

## **Pull第一個映像檔**

**Docker 映像檔就是一個唯讀的模板。**\
**例如：一個映像檔可以包含一個完整的 ubuntu 作業系統環境，裡面僅安裝了 LAMP 或使用者需要的其它應用程式。**\
**映像檔用於建立 Docker 容器**\ <br>

### **docker images**&#x20;

**當我們第一次執行 docker images 檢視映像檔時，可以看到並沒有任何東西，所以，依需求找到你要的映像檔名稱，並pull它**<br>

**docker search 映像檔**\
**這裡下載了一個名為ubuntu的容器，若沒有特別指定版本，則會使用最新的映像檔(latest)**<br>

**docker pull ubuntu**&#x20;

```
docker images
REPOSITORY          TAG     IMAGE ID      CREATED    SIZE
ubuntu              latest  74f8760a2a8b  7 days ago 82.4MB
```

**雖然我們pull了一個名為ubuntu的映像檔案，但實際上，這個映像檔在docker中真正的名稱，是以其 IMAGE ID 保存（此處為 74f8760a2a8b）**<br>


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