bash 动态获取由 docker run 命令创建的正在运行的容器 id/name
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Dynamically get a running container id/name created by docker run command
提问by Nobita
So I'm trying to run the following shell script which requires the container id/name of the container (in which the script would be run) dynamically.
因此，我正在尝试运行以下 shell 脚本，该脚本需要动态获取容器的容器 ID/名称（将在其中运行脚本）。
One way could be to do docker psand then getting the Container Id, but that won't be dynamic.
一种方法可能是执行docker ps然后获取容器 ID，但这不会是动态的。
So is there a way to do this dynamically?
那么有没有办法动态地做到这一点？
#!/bin/bash
docker exec <container id/name> /bin/bash -c "useradd -m <username> -p <password>"
回答by yamenk
You can give your container a specific name when running it using --name option.
您可以在运行时使用 --name 选项为容器指定特定名称。
docker run --name mycontainer ...
Then your exec command can use the specified name:
然后您的 exec 命令可以使用指定的名称：
docker exec -it mycontainer ...
回答by dgo
I just figured out a way to do this that works for this. I'm constantly going into my container in bash, but each time I do it I have to look up the id of the running container - which is a pain in the butt. I use the --filtercommand like so:
我只是想出了一种方法来做到这一点。我经常使用 bash 进入我的容器，但每次我都必须查找正在运行的容器的 ID - 这很麻烦。我--filter像这样使用命令：
docker ps -q --filter="NAME={name of container}"
Then the only thing that's output is the id of the container, which allows me to run:
然后输出的唯一内容是容器的 id，它允许我运行：
docker exec -it $(docker ps -q --filter="NAME={name of container}") bash
which is what I really want to do in this case.
在这种情况下，这就是我真正想做的事情。
You can filter by
你可以过滤
id, name, label, exited, status, ancestor,
beforesince, volume, network, publishexpose,
health,isolation, or is-task
The documenation for filter is here. Hope that helps someone.
过滤器的文档在这里。希望能帮助某人。
