Add target property to build

[tonistiigi]

Compose should support specifying target stage in the build definition. moby/moby#32496

@dnephin

[lawliet89]

I've submitted docker/docker-py#1612 to add the functionality to docker-py before I attempt to add it to docker-compose.

[sirlatrom]

@lawliet89 Looks like it worked in docker/docker-py#1612 - any chance it can work in docker-compose too?

[lawliet89]

I'm waiting for a new release of the docker-py library before I can add it to compose.

…

On Mon, 29 May 2017, 21:13 Sune Keller, ***@***.***> wrote: @lawliet89 <https://github.com/lawliet89> Looks like it worked in docker/docker-py#1612 <docker/docker-py#1612> - any chance it can work in docker-compose too? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#4790 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AA8APRr_S-2HAE7vtmQsvF4AENSuwQM9ks5r-sSGgaJpZM4NPrI9> .

[philtay]

@lawliet89 docker-py 2.4.0 has been released

[lawliet89]

@shin- : Looking at the compatibility matrix, this feature would only be supported by at least Docker 17.05. So only version 3.3 of Docker Compose files would support it. Would it be alright if I introduced a new version 2.3 or just limit this to only 3.3?

[philtay]

@lawliet89 Look at how the "network" option was recently added and do the same. Just open a PR and the rest will follow. It's going to take ages otherwise.