Docker: Difference between revisions

Latest revision as of 04:26, 11 February 2018

Docker is a container tool.

The `dockerd` daemon should be run with the --data-root argument to specify the root folder:

/usr/bin/dockerd --data-root /home/georges/home3/docker -H fd://

Also, when the docker folder is copied from one place to another, the permissions should be preserved as follow: cp -rpv old-docker new-docker

First, you need to run the container associated with the image you want to analyse.

$(docker ps -ql) should give the container ID of the latest executed container.

Thus the following command lists the files in the image of the latest executed container:

docker export $(docker ps -ql) | tar tv

@@ Line 1: / Line 1: @@
 Docker is a container tool.
-== Set a custom docker folder ==
+=== Set a custom docker folder ===
 The `dockerd` daemon should be run with the --data-root argument to specify the root folder:
@@ Line 9: / Line 9: @@
 Also, when the docker folder is copied from one place to another, the permissions should be preserved as follow:
 cp -rpv old-docker new-docker
+=== How to know the content of an image? ===
+First, you need to run the container associated with the image you want to analyse.
+$(docker ps -ql) should give the container ID of the latest executed container.
+Thus the following command lists the files in the image of the latest executed container:
+docker export $(docker ps -ql) | tar tv