rundocker 1.0.0

Rundocker

A script for running docker container process

The issue we are solving here

Since docker 0.6, you can actually run docker container like normal process

` docker run --rm foobar `

when you press Ctrl + C, docker client will proxy the INT signal for you to the docker container, as a result, container will be terminated. However, in many cases, docker container will not be closed correctly, even the docker client process is stopped. For example, when you tried to run a container with an used port, the run command will fail, however, somehow the docker container will not be removed, and it causes following run commands fail

` 2014/07/27 03:24:45 Error response from daemon: Cannot start container 08b25a41e30be78410a2556ffe01e720ff0d7bd512a53e8a44d7bceb8d3cf83e: Bind for 172.17.42.1:5050 failed: port is already allocated 2014/07/27 03:24:46 Error response from daemon: Conflict, The name foobar is already assigned to 08b25a41e30b. You have to delete (or rename) that container to be able to assign foobar to a container again. 2014/07/27 03:24:48 Error response from daemon: Conflict, The name foobar is already assigned to 08b25a41e30b. You have to delete (or rename) that container to be able to assign foobar to a container again. .... `

There is an [issue #7245](https://github.com/docker/docker/issues/7245) describes the problem. If new feature is added, I think we can drop the project then.

Installation

You can install it via

` pip install rundocker `

Since it only has [one Python script file](https://github.com/victorlin/rundocker/blob/master/rundocker/__main__.py), you can actually copy the script to a file and make it executalbe.

Usage

Use rundocker to run docker with a name as you usually do

` sudo rundocker --rm --name="foobar" eggs/spam `

How it works

The script looks into –cidfile argument, if it is provided, before docker run is executed, it will ensure the container is removed. If –cidfile is not provided, it will use /var/run/<name>.cid, and pass it to docker run for you.

When the script receives INT signal, it will stop the container.