Docker Cookbook - Second Edition

There's more...

The docker container diff command lists all the changes to the container filesystem from its image, as shown in the following code:

    $ docker diff 6289e32373bf
    ...OUTPUT SNIPPED...
    C /var/log
    C /var/log/alternatives.log
    A /var/log/apache2
    A /var/log/apache2/access.log
    A /var/log/apache2/error.log
    A /var/log/apache2/other_vhosts_access.log
    ... OUTPUT SNIPPED... 

We can see that there is a prefix before each entry of the output. The following is a list of those prefixes:

• A: This is for when a file/directory has been added
• C: This is for when a file/directory has been modified
• D: This is for when a file/directory has been deleted

By default, a container gets paused while doing the commit. You can change its behavior by passing ...