[Docker] Backup / Restore Images

Tue, 06 Dec 2016 15:00:41 +0000

Images should be a kind of “throw-away” format: You got your Dockerfile, and as soon as you need to run a specific container, you should just built it from scratch: All the latest security updates, software versions - great. However, sometimes you got a bit of specialized stuff which you want to backup for later use.

I found a good answer to that topic: https://stackoverflow.com/questions/26707542/how-to-backup-restore-docker-image-for-deployment

Backup:

docker save myusername/myproject:latest | gzip -c > myproject_img_bak20141103.tgz

Restore:

Shrink VMware Image Files on Linux Appliances

Thu, 16 Jul 2009 13:35:19 +0000

Works only with dynamic HDDs!

Backup!
Remove old / unused Packages
Remove downloaded Packages: sudo apt-get clean, Remove only old downloaded Packages: sudo apt-get autoclean
“ZeroOut” unused Space: cat /dev/zero > zero.dat ; sync ; sleep 1 ; sync ; rm zero.dat
Under GUI: “sudo vmware-toolbox” and use shrink on “/”
Under VIClient: Defrag

Images on Nico Maas

[Docker] Backup / Restore Images

Shrink VMware Image Files on Linux Appliances