Thin image

[md5]

It would be cool if there were a thinner container-exporter image. The go:onbuild base is currently 514MB and the layer that does the go-wrapper download is 72MB. The layer that does the go install itself is only 16MB, so I suspect a resulting thin image could be around that size.

The swarm image is a good example of this pattern: https://github.com/docker/swarm-library-image/blob/master/Dockerfile

I've also created a couple of them myself: https://github.com/synctree/docker-logstash-forwarder https://github.com/md5/docker-gen/tree/static-build-image

[discordianfish]

Hi @md5,

I simply have no build pipeline for that available so far. I hoped for some Docker native solution to this problem as proposed here:

• Proposal: Nested builds moby/moby#7115
• Proposal: Dockerfile BUILD instruction moby/moby#7149
• Proposal: Incorporate docker run IMAGE into BUILD moby/moby#8660
• https://groups.google.com/forum/#!topic/docker-dev/70rDCdOCjvM

Although this discussion is going on for over a year, nothing really materialized yet. That being said, I've planned to build small images for some go project we built, but didn't get to it yet. So will keep this open until we have a solution.

[md5]

Sounds good. Thanks for the response. I've been patiently waiting for moby/moby#7115 or something like it as well.

[discordianfish]

Hi @md5,

I switched to alpine linux for the base image and run everything in one step than cleans up afterwards. This brings down the image size to 27.01MB MB which should be good for now :)

[md5]

Thanks @discordianfish 👍