clawoflight

Keybase proof

I hereby claim:

• I am ClawOfLight on github.
• I am clawoflight (https://keybase.io/clawoflight) on keybase.
• I have a public key whose fingerprint is 871F 1047 7DB3 DDED 5FC4 47B2 26C7 E577 EF96 7808

To claim this, I am signing this object:

clawoflight

vim: sw=4 ts=4 et

Normal Mode
====================

General
--------------------
u       undo
U       undo all changes on last modified line
^r      redo

clawoflight

That’s one of the real strengths of Docker: the ability to go back to a previous commit. The secret is simply to docker tag the image you want.

Here’s an example. In this example, I first installed ping, then committed, then installed curl, and committed that. Then I rolled back the image to contain only ping:

$ docker history imagename
IMAGE               CREATED             CREATED BY                SIZE
f770fc671f11        12 seconds ago      apt-get install -y curl   21.3 MB
28445c70c2b3        39 seconds ago      apt-get install ping      11.57 MB
8dbd9e392a96        7 months ago                                  131.5 MB