bash 如何进入这个 dockerfile / nginx 容器？
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How do I enter this dockerfile / nginx container?
提问by peruvian
With centos in a docker container, I just type 'docker attach container ID' and it takes me to the shell prompt, where i can install and configure nginx.
使用 docker 容器中的 centos，我只需输入“docker attach 容器 ID”，它就会将我带到 shell 提示符，在那里我可以安装和配置 nginx。
This one is easier: docker.com dockerfile/nginxYou just run the file and everything is installed and configured.
这个更简单：docker.com dockerfile/nginx您只需运行该文件，一切都已安装和配置。
but i can't figure out how to get in and access the files.
但我不知道如何进入和访问文件。
回答by Tadas ?ubonis
UPDATE(a much easier method that was introduced later):
UPDATE（稍后介绍的更简单的方法）：
docker exec -t -i container_name /bin/bash
Original answer
原答案
Actually you can access a running container too.
实际上，您也可以访问正在运行的容器。
Find your container's ID:
查找容器的 ID：
docker ps
Export the ID of the process that runs the container:
导出运行容器的进程的 ID：
PID=$(docker inspect --format '{{.State.Pid}}' my_container_id)
"Connect" to it by changing namespaces:
通过更改命名空间“连接”到它：
nsenter --target $PID --mount --uts --ipc --net --pid
Originally this was described here: http://jpetazzo.github.io/2014/03/23/lxc-attach-nsinit-nsenter-docker-0-9/
最初这是在这里描述的：http: //jpetazzo.github.io/2014/03/23/lxc-attach-nsinit-nsenter-docker-0-9/
回答by SJX
In my case the standard bash didn't exist. Using /bin/sh helped me:
就我而言，标准 bash 不存在。使用 /bin/sh 帮助了我：
docker run -it -p 80:80 dockerfile/nginx /bin/sh
回答by Andreas Steffan
First make sure to understand the difference between images and containers. Running the image:
首先确保了解图像和容器之间的区别。运行图像：
docker run -d -p 80:80 dockerfile/nginx
creates a new container executing only nginx. This process does not interact like a shell. If you really need access to the files in this container while its running, your only option is to use nsinit, nsenter or lxc-attach. Have a look at https://blog.codecentric.de/en/2014/07/enter-docker-container/for details.
创建一个仅执行 nginx 的新容器。这个过程不像 shell 那样交互。如果您确实需要在容器运行时访问其中的文件，您唯一的选择是使用 nsinit、nsenter 或 lxc-attach。有关详细信息，请查看https://blog.codecentric.de/en/2014/07/enter-docker-container/。
Alternatively, you might want to try
或者，您可能想尝试
docker run -it -p 80:80 dockerfile/nginx /bin/bash
which creates a new container executing an interactive shell instead of nginx.
它创建了一个新容器，它执行交互式 shell 而不是 nginx。
