docker-image

I am trying docker rmi c565603bc87f Error: Error response from daemon: conflict: unable to delete c565603bc87f (cannot be forced) - image has dependent child images So i can't delete image even with -f flag. How to delete image then and all of its children ? Linux and docker version: uname -a Linux goracio-pc 4.4.0-24-generic #43-Ubuntu SMP Wed Jun 8 19:27:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux docker version Client: Version: 1.11.2 API version: 1.23 Go version: go1.5.4 Git commit: b9f10c9 Built: Wed Jun 1 22:00:43 2016 OS/Arch: linux/amd64 Server: Version: 1.11.2 API version: 1.23 Go

I understand the difference between export (for containers) and save (for images). But at the end of the day the tarball produced by either save or export should be used as an image . So why are there 2 commands to make an image from a tarball? VonC docker save will indeed produce a tarball, but with all parent layers, and all tags + versions. docker export does also produce a tarball, but without any layer/history. It is often used when one wants to "flatten" an image , as illustrated in " Flatten a Docker container or image " from Thomas Uhrig : docker export <CONTAINER ID> | docker import -

I'm trying to run MULTIPLE commands like this. docker run image cd /path/to/somewhere && python a.py But this gives me "No such file or directory" error because it is interpreted as... "docker run image cd /path/to/somewhere" && "python a.py" It seems that some ESCAPE characters like "" or () are needed. So I also tried docker run image "cd /path/to/somewhere && python a.py" docker run image (cd /path/to/somewhere && python a.py) but these didn't work. I have searched for Docker Run Reference but have not find any hints about ESCAPE characters. anhlc To run multiple commands in docker, use

When using Docker, we start with a base image. We boot it up, create changes and those changes are saved in layers forming another image. So eventually I have an image for my PostgreSQL instance and an image for my web application, changes to which keep on being persisted. So the question is: What is a container? Thomas Uhrig An instance of an image is called a container. You have an image, which is a set of layers as you describe. If you start this image, you have a running container of this image. You can have many running containers of the same image. You can see all your images with docker