为什么在检查Docker容器时Config.User为空字符串? [英] Why is Config.User an empty string when I inspect a Docker container?

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问题描述

我拉并运行了Docker容器 jcsilva / docker-kaldi -gstreamer-server

I pulled and ran the Docker container jcsilva/docker-kaldi-gstreamer-server:

docker pull jcsilva/docker-kaldi-gstreamer-server
docker run -it -p 8080:80 -v /media/kaldi_models:/opt/models jcsilva/docker-kaldi-gstreamer-server:latest /bin/bash

我可以看到它正在运行:

I can see it running:

username@server:~$ docker ps
CONTAINER ID        IMAGE                                          COMMAND                  CREATED             STATUS              PORTS                                                                                                     NAMES
24f598fd5019        jcsilva/docker-kaldi-gstreamer-server:latest   "/bin/bash"              12 hours ago        Up 12 hours         0.0.0.0:8080->80/tcp     

我检查时:

username@server:~$ docker inspect 24f598fd501911f32e10884ed3f86547e05a031f0d31324badc40c5fb5ed732a > inspection.json

我在 inspection.json

    "Config": {
        "Hostname": "24f598fd5019",
        "Domainname": "",
        "User": "",                       <-- Why is User an empty string?
        "AttachStdin": true,
        "AttachStdout": true,
        "AttachStderr": true,
        "ExposedPorts": {
            "80/tcp": {}
        },

是什么可以解释Config.User是一个空字符串?

What could explain that Config.User is an empty string?

我使用Docker版本18.03.0-ce,在Ubuntu 16.04.4 LTS(GNU / Linux 4.4.0-119-generic x86_64)上构建0520e24。

I use Docker version 18.03.0-ce, build 0520e24 on Ubuntu 16.04.4 LTS (GNU/Linux 4.4.0-119-generic x86_64).

推荐答案

因为 Dockerfile 没有 USER 指令最有可能。

Because the Dockerfile doesn't have a USER directive, most likely. Why are you expecting it to have one?

在我的PC上运行的所有容器中,只有一个拥有用户,这就是 grafana ,因为这就是 Dockerfile 。不是启动它的用户(我: roger )。

Of all of the containers running on my PC right now, only one has a user, and that's grafana, because that's what's in the Dockerfile. It's not the user (me: roger) that launched it.

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