Compose: Multi-stage build target support in Compose file version 3.x

[ibnesayeed]

Support for the target option is missing in 3.x version of Compose file format. It is supported in 2.3 though #5043. Looking at the compatibility matrix, it should be added in 3.3+ versions as well because they support Docker version 17.06.0+.

[VolCh]

It supports in 3.4 version, started from 1.17

[ibnesayeed]

Thanks @VolCh. Since 1.17 is still in RC phase, I will wait until it reaches to masses, meanwhile I will continue using 2.3.

[Jokero]

But documentation https://docs.docker.com/compose/compose-file/#build does not say anything about this option :smile:

[jeeyoungk]

any update on this?

[shin-]

@jeeyoungk The feature has been implemented and available in main releases for several months.

[awsmsrc]

@shin- could you point me to the docs? It seems to be undocumented. https://docs.docker.com/compose/reference/build/
https://docs.docker.com/compose/compose-file/#build

[shin-]

https://docs.docker.com/compose/compose-file/compose-file-v2/#target

[ibnesayeed]

https://docs.docker.com/compose/compose-file/compose-file-v2/#target

That is the documentation of version 2 of compose file, not version 3.

[shin-]

Yeah. The option works the same, but obviously it's missing from the v3 docs. Feel free to create an issue for this on the docs repo: https://github.com/docker/docker.github.io

[ibnesayeed]

Created a ticket at https://github.com/docker/docker.github.io/issues/6036.