Docker(在boot2docker下)在构建时不寻找/查找本地映像 [英] Docker (under boot2docker) does not look for/find local images when building
问题描述
我自己构建了一个图像, oceania / python
:
$ docker images
REPOSITORY TAG IMAGE ID创建的虚拟大小
oceania / python 0.1 800229a896ff 16小时前510.4 MB
我现在有另一个Dockerfile,我想使用 FROM oceania / python
当我尝试构建此图像时,我得到:
将构建上下文发送到Docker守护程序31.74 MB
将构建上下文发送到Docker守护程序
步骤0:FROM oceania / python
提取存储区oceania / python
2014/11/20 17:23:51错误:image oceania / python not found
不要先看看我的本地图片,然后上网尝试拉扯?
我真的有义务将其上传到存储库吗?
@jpe tazzo在这里回答说,我在做什么应该工作:
https://stackoverflow.com/a/20501690/ 202168
我假设问题可能是boot2docker相关的
呃,好的...
似乎我必须包含标签,即
FROM oceania / python:0.1
...然后它工作。
文档似乎允许没有标签的 FROM
指令,他们说:如果没有给出FROM指令的标签,则假定最新的。
我猜根本的问题是,如果您的图像没有上传到某个地方的索引,则无法将最新解析为标签。
另一件令人困惑的事情是,在其他人的答案和simil例如自动码头服务器构建运行错误:无法找到图像,他们得到一些如下所示的输出:
无法在本地找到图片'foo / bar:baz'
但是在我的输出中,没有什么可说的docker甚至试图在本地看看
I'm running Docker on OS X under boot2docker 1.3.1
I built myself an image, oceania/python
:
$ docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
oceania/python 0.1 800229a896ff 16 hours ago 510.4 MB
I have another Dockerfile now where I want to use FROM oceania/python
When I try to build this image I get:
Sending build context to Docker daemon 31.74 MB
Sending build context to Docker daemon
Step 0 : FROM oceania/python
Pulling repository oceania/python
2014/11/20 17:23:51 Error: image oceania/python not found
Shouldn't it look at my local images first before going online to try and pull it?
Am I really obliged to upload it to a repository?
@jpetazzo answers here that what I am doing should work:
https://stackoverflow.com/a/20501690/202168
I assume the problem may therefore be boot2docker related
Uhhh, ok...
It seems I have to include the tag, i.e.
FROM oceania/python:0.1
...then it works.
The docs appear to allow a FROM
directive without the tag, and they say: "If no tag is given to the FROM instruction, latest is assumed."
I guess the underlying problem is that if your image is not uploaded to an index somewhere then it can't resolve 'latest' to a tag.
Another thing that's confusing is it seems in other people's answers and comments on similar issue, eg automated docker build run error: Unable to find image they get some output that looks like:
Unable to find image 'foo/bar:baz' locally
but in my output there's nothing to say docker even tried to look locally
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