I have used docker ubuntu16.04 image , but when I install docker in this container , it’s faild ,so I need some solution about this,how can I solve it??? please help.
please paste your docker run line or your docker-compose.yml.
Actualy, you can mount the docker binary and the socket into the container as a volume. Though, this will result in Controlling the hosts docker deamon and NOT a separate docker daemon inside the container. If you realy need that, you might take a look at -dind Tags on the docker repo on Dockerhub.
haode, thank you , I want to use docker directly as a real Ubuntu, So I “apt-get install docker.io”,
then I get this false,
I actually want to use the docker ubuntu as a real Ubuntu(like a vitual machine),so can you tell me Is that possible？
Sort of yes!
Since your container actualy already uses your hosts kernel, a docker engine inside a container will use it as well and all the containers it starts.
Thus, with a Docker in Docker Image you get an isolation with objects private to the itself. It appears to be like on a vm, even though it is not 