/ DOCKER

Tiny Docker Images

I had a play with the excellent Alpine Linux over the weekend. Alpine describes itself as;

Alpine Linux is a security-oriented, lightweight Linux distribution based on musl libc and busybox.

And by lightweight they really do mean lightweight, with an 8MB container size and a 130MB bare metal installation it is tiny. Because of this I decided to use it as the new base images for my Docker Images as some of them were getting a little bloated. As you can see from the table below, the difference in the final image size is staggering …

  • ImageName / Before / After

  • Base / 244MB / 13MB

  • NGINX-PHP / 446MB / 76MB

  • MariaDB / 432MB / 189MB

  • AB / 261MB / 14MB

… even though I have stated before I am quite a snob when it comes to which Operating System I run I think Apline has definitely changed my mind.

So far I have managed to install everything I need from their package repo with very little in the way of changes to my original CentOS 7 image configuration. Very impressive stuff.

You can find my images on the Docker Hub or the source on GitHub.

russmckendrick

Russ McKendrick

Buys way too many vinyl records, writes a lot about Docker & loves orchestration. Works at @node4ltd / @n4stack has written for @PacktPublishing

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