为什么 "docker login" 在 Docker Quickstart Terminal 中失败，但在默认机器中工作？

Question

我已经在 Windows 8.1 中安装了 Docker 工具箱，并且一直在按照安装教程进行操作。当到达 create and push your own image 的步骤时，我在尝试运行 docker login ... 时收到此错误。

### VIA Docker Quickstart Terminal
### docker login --username=myuser --password="mypass" --email=myemail@gmail.com
time="2015-11-17T03:20:58.160803558Z" level=debug msg="Calling POST /v1.21/auth" 
time="2015-11-17T03:20:58.160838971Z" level=info msg="POST /v1.21/auth" 
time="2015-11-17T03:20:58.169033324Z" level=debug msg="hostDir: /etc/docker/certs.d/https:/registry-win-tp3.docker.io/v1" 
time="2015-11-17T03:20:58.169071565Z" level=debug msg="pinging registry endpoint https://registry-win-tp3.docker.io/v1/" 
time="2015-11-17T03:20:58.169084660Z" level=debug msg="attempting v1 ping for registry endpoint https://registry-win-tp3.docker.io/v1/" 
time="2015-11-17T03:20:58.898542338Z" level=debug msg="Error unmarshalling the _ping PingResult: invalid character '<' looking for beginning of value" 
time="2015-11-17T03:20:58.898803841Z" level=debug msg="PingResult.Version: \"\"" 
time="2015-11-17T03:20:58.898818084Z" level=debug msg="Registry standalone header: ''" 
time="2015-11-17T03:20:58.898836197Z" level=debug msg="PingResult.Standalone: true" 
time="2015-11-17T03:20:58.898853685Z" level=debug msg="attempting v1 login to registry endpoint https://registry-win-tp3.docker.io/v1/" 
time="2015-11-17T03:20:59.478756938Z" level=error msg="Handler for POST /v1.21/auth returned error: Unexpected status code [403] : <html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n\n" 
time="2015-11-17T03:20:59.478815334Z" level=error msg="HTTP Error" err="Unexpected status code [403] : <html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n\n" statusCode=500

为了解决这个问题，我在 Docker 默认 VM 中尝试了运行ning docker login ...。并且有效！

### VIA default virtual machine (192.168.99.100)
### docker login --username=myuser --password="mypass" --email=myemail@gmail.com https://index.docker.io/v1/
time="2015-11-17T03:20:46.053333255Z" level=debug msg="Calling POST /v1.21/auth" 
time="2015-11-17T03:20:46.053404176Z" level=info msg="POST /v1.21/auth" 
time="2015-11-17T03:20:46.082796012Z" level=debug msg="hostDir: /etc/docker/certs.d/https:/index.docker.io/v1" 
time="2015-11-17T03:20:46.082930763Z" level=debug msg="pinging registry endpoint https://index.docker.io/v1/" 
time="2015-11-17T03:20:46.082946790Z" level=debug msg="attempting v1 ping for registry endpoint https://index.docker.io/v1/" 
time="2015-11-17T03:20:46.082959103Z" level=debug msg="attempting v1 login to registry endpoint https://index.docker.io/v1/"

我注意到他们使用了两个不同的 URL，第一个遇到了解析错误。凭据显然是正确的，因为它们在 VM 内工作，除非这两个域不共享用户。 MINGW64 是否损坏了 URL 或响应？

Answer 1

2016 年 2 月更新

PR 19891 "Enable cross-platforms login to Registry" 应该可以解决问题

Use a daemon-defined Registry URL for docker login.

This allows a Windows client interacting with a Linux daemon to properly use the default Registry endpoint instead of the Windows specific one.

它在 commit 19eaa71（可能是 docker 1.10？）

这在 docker/docker issue 15612 and docker/docker issue 18019

中都有报道

After some analysis of the source code I’ve detected that we have different registry URLs for Windows and UNIX.

Windows: https://registry-win-tp3.docker.io/v1/
Unix：https://index.docker.io/v1/

Windows url 来自 recent PR 15417 评论：

// Currently it is a TEMPORARY link that allows Microsoft to continue
// development of Docker Engine for Windows.

所以这个 url 可能不起作用（除非你使用的是最近的 Windows Server 2016）

docker/hub-feedback issues 473 中似乎有一个解决方法，其中涉及：

指定 docker io 的默认索引注册表，

docker login --username=myuser --password=mypassword --email=myemail https://index.docker.io/v1/
WARNING: login credentials saved in C:\Users\myuser\.docker\config.json
Login Succeeded

修改上一步创建的 config.json 文件，以便为 index.docker.io 添加与 registry-win:
相同的凭据

config.json:

{
    "auths": {
        "https://index.docker.io/v1/": {
            "auth": "myhash",
            "email": "myemail"
        },
        "https://registry-win-tp3.docker.io/v1/": {
            "auth": "myhash",
            "email": "mydomain"         
        }
    }
}

在那之后，docker push index.docker.io/myuser/myrepo:latest 确实有效。

为什么 "docker login" 在 Docker Quickstart Terminal 中失败，但在默认机器中工作？

Why does "docker login" fail in Docker Quickstart Terminal but work from within the default machine?

docker

docker-toolbox