Multi-Stage builds on docker hub

[captncraig]

In trying to run multi-stage builds in a docker hub automated build:

Error parsing reference: "golang:1.7.3 as builder" is not a valid repository/tag: invalid reference format

It looks like docker hub is not using the version of docker that supports this yet. Is there a timeline for when support will be availible?

[pkennedyr]

Thanks for the feedback. The Docker Hub and Docker Cloud automated build service will be adding support for multi-stage builds when this feature graduates to the stable channel (currently targeted for June as part of the 17.06 release).

For more information on the Docker time-based release schedule, please see: https://docs.docker.com/engine/installation/#time-based-release-schedule

[captncraig]

Thank you for the prompt feedback! Feel free to close this issue unless you'd rather leave it open until that release.

[medyagh]

@pkennedyr are we there there?
(aka is it there multistage on dockerhub yet?)

[captncraig]

I think not, my test app is still failing as of now: https://hub.docker.com/r/captncraig/multi-stage-test/builds/bu5tvny8jfhjzbsjg5rpw3s/

[pkennedyr]

[UPDATE] Multi-stage builds are now available in Docker Cloud as part of the 5-30-2017 release:
https://forums.docker.com/t/docker-cloud-product-update-5-30-2017/32938

To take advantage of multi-stage builds (in Docker Cloud), select Edge (17.05.0-ce) as the Docker version of an automated repository.

• Download the latest Edge release of Docker for Mac or Docker for Windows (to use multi-stage builds locally):
• How to use multi-stage builds

We encourage you to try out Docker Cloud as this is where you will find support for this and many other autobuild features.

[medyagh]

@pkennedyr is the multi stage build still scheduled for docker hub for this june ? or has that been cancelled and only available in docker cloud ?

[drasko]

What's the conclusion - is Docker Hub getting multi-stage builds any time soon?

[pkennedyr]

[UPDATE to earlier post] Docker Hub will in fact support multi-stage builds when the automated build system is upgraded to 17.06.01 (target ETA July). We apologize for the confusion.

[milsonian]

I'm a bit confused...

The biggest feature in 17.06 CE is that multi-stage builds, announced in April at DockerCon, have come to the stable release.

So is Hub not going to go to 17.06 at any point? Or are you pulling the feature from CE / will it be flagged / etc.?

[pkennedyr]

@milsonian Apologies for the confusion, with availability of multi-stage builds in 17.06, this feature will also be available in Docker Hub when the corresponding upgrade to 17.06 occurs (ETA July).

Note: Docker Cloud provides the ability to specify the Docker version (Stable or Edge) to use for an automated build, which enables access to the multi-stage build feature via the Edge channel today.

[milsonian]

That's great, thanks for the clarification @pkennedyr!