Just got it. As regan pointed out, I had to add the user to the sudoers group. But the main reason was I’d forgotten to update the repositories cache, so apt-get couldn’t find the sudo package. It’s working now. Here’s the completed code: FROM ubuntu:12.04 RUN apt-get update && \ apt-get -y install sudo RUN … Read more
if I want to revert the container I can try to commit an image, and then later delete the container, and create a new container from the committed image. But if I do that the volume gets deleted and all my data is gone As the docker user guide explains, data volumes are meant to … Read more
I’m also interested in this problem. As @Thasmo mentioned, port forwardings can be specified ONLY with docker run (and docker create) command. Other commands, docker start does not have -p option and docker port only displays current forwardings. To add port forwardings, I always follow these steps, stop running container docker stop test01 commit the … Read more