v5 base Image

[tybritten]

Since we're already upgraded to 5.x, I'm looking at revving the docker images we're testing with as well. The go service ones (MR, Courier, Indexer, Archiver) are pretty slim to begin with but the main RP one is still big. I'd like to switch to a multistage build, hopefully for both the base as well as the main rapidpro image.
@smn I don't know much about these geos libs- can we build them and then transfer them to a final image or do we need all the prereqs?

[smn]

I don't really know to be very honest! We can try and find out.
I don't recall offhand which python dependencies require these to be installed. I think @tobiasmcnulty originally put this rapidpro-base-docker thing together.

👍 from me on attempting to switch to a multistage build and just copying the necessary binaries over though.

[tybritten]

yeah I'm looking at this approach:
https://blog.realkinetic.com/building-minimal-docker-containers-for-python-applications-37d0272c52f3

I'd love to get the final running image under 1GB 😆

[tybritten]

i'm messing with it right now and if it works, i'll put. a PR in for a v5 folder/dockerfile

[tybritten]

also these are interesting: https://github.com/OSGeo/gdal/tree/master/gdal/docker

do you know how much/which parts of GDAL/GEOS/etc RP uses?

[tobiasmcnulty]

also these are interesting: https://github.com/OSGeo/gdal/tree/master/gdal/docker

Those look potentially helpful!

do you know how much/which parts of GDAL/GEOS/etc RP uses?

I don't, sorry. my gut says just go with whatever is needed for Django (don't try to pare it down too much)...

Semi-related, I soured on Alpine after discovering the strftime bug. I updated an old post recently with my current approach for Django-based Dockerfiles:

https://www.caktusgroup.com/blog/2017/03/14/production-ready-dockerfile-your-python-django-app/

[tybritten]

I like that approach @tobiasmcnulty. What I'm testing now is a combo of that- do the deps/pip installs in a builder stage then just COPY /venv /venv to the run image

[smn]

@tybritten how's v5 + docker working for you ? I've not looked much at these docker builds since v5 was released.

[tybritten]

not much is different from v4. Images sizes are still bigger than I'd like (over 1.1GB even with using the multistage builds) i really can't seem to figure out exactly how much of those GEOS libs etc are needed so i think we can stick with the v4 base for now.