Publish a "build" image to support custom module development

[AnthonyMastrean]

I'm just getting started with custom module development and I'm having a hard time getting the exact correct prerequisites and sources downloaded properly. Would it make sense to publish a "build" image Looks like it should be something like the first ~50 lines of this image, except without compiling and without cleaning up.

[thresheek]

All the prerequisites are in apt-get build-dep nginx.

Regarding the "build" image, it might make sense yes, if it includes:

• a script to build modules from http://hg.nginx.org/pkg-oss/file/tip/build_module.sh
• a way to inject additional build depends (as third party modules might need some)
• documentation on how to use it.

PR are welcome!

[AnthonyMastrean]

Would you need a "build image" per distribution? I assume building modules from source would require building on the same distribution as the intended runtime.

What's the equivalent of apt-get build-dep nginx on Alpine w/ apk?

[thresheek]

You'd need the binaries to be compatible to the actual tag/nginx version you're building against, so indeed, you need to build on the same distribution. For apk, we've recently introduced nginx.org prebuilt packages, so you might want to re-use those to create new module packages. See http://hg.nginx.org/pkg-oss/file/tip/alpine for more details on that.

[thresheek]

Hi. I've added a way to make it easier to add modules on top of the official image, please check https://github.com/nginxinc/docker-nginx/tree/master/modules for more information.