我试图创建一个 ubuntu docker 镜像，但是当我检查进程时，该进程没有在后台运行。
这是命令
PREMs-MacBook-Pro:Documents prem$ docker run ubuntu:16.04 grep -v '^#' /etc/apt/sources.list
deb http://archive.ubuntu.com/ubuntu/ xenial main restricted
deb http://archive.ubuntu.com/ubuntu/ xenial-updates main restricted
deb http://archive.ubuntu.com/ubuntu/ xenial universe
deb-src http://archive.ubuntu.com/ubuntu/ xenial universe
deb http://archive.ubuntu.com/ubuntu/ xenial-updates universe
deb-src http://archive.ubuntu.com/ubuntu/ xenial-updates universe
deb http://archive.ubuntu.com/ubuntu/ xenial multiverse
deb http://archive.ubuntu.com/ubuntu/ xenial-updates multiverse
deb http://archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu/ xenial-security main restricted
deb http://security.ubuntu.com/ubuntu/ xenial-security universe
deb-src http://security.ubuntu.com/ubuntu/ xenial-security universe
deb http://security.ubuntu.com/ubuntu/ xenial-security multiverse
PREMs-MacBook-Pro:Documents prem$ docker run ubuntu:16.04 grep -v '^#' /etc/apt/sources.list
deb http://archive.ubuntu.com/ubuntu/ xenial main restricted
deb http://archive.ubuntu.com/ubuntu/ xenial-updates main restricted
deb http://archive.ubuntu.com/ubuntu/ xenial universe
deb-src http://archive.ubuntu.com/ubuntu/ xenial universe
deb http://archive.ubuntu.com/ubuntu/ xenial-updates universe
deb-src http://archive.ubuntu.com/ubuntu/ xenial-updates universe
deb http://archive.ubuntu.com/ubuntu/ xenial multiverse
deb http://archive.ubuntu.com/ubuntu/ xenial-updates multiverse
deb http://archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu/ xenial-security main restricted
deb http://security.ubuntu.com/ubuntu/ xenial-security universe
deb-src http://security.ubuntu.com/ubuntu/ xenial-security universe
deb http://security.ubuntu.com/ubuntu/ xenial-security multiverse
PREMs-MacBook-Pro:Documents prem$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
最佳答案
简单的答案是，当您检查正在运行的容器时，您的容器已经退出 (docker ps)
如docker ps -a显示所有容器:运行的和未运行的。
您的命令grep它工作，然后退出，所以容器也退出。-d在这里没有任何区别，因为容器的生命周期很短。但是你仍然可以使用 docker logs <container-id> 看到它的输出。
如果您想检查图像，只是为了好玩，您可以:
docker run -it imagename bash
(如果 bash 不可用，请使用
sh)请记住
docker run创建一个新容器，因此更改只会在该容器中。图像是不可变的。
关于docker进程未在后台运行，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44267299/