Multi Stage Docker Builds

kasarrowtec · 20 Oct 2021, 12:32

Hi,

I am trying to do a multi stage docker build as my current docker image is too large but it seems that it is not possible with my current dockerfile.
I start with

FROM arm64v8/ubuntu:latest as BUILDER

and it is unable to pull the image from docker.

I also tried just
FROM arm64v8/ubuntu:latest
then when i need to copy the compiled file over in the next part using -
COPY --from=0
(0 being the first build)
and i am returned with an error stating the --from parameter doesnt exist in voxl-docker.

Does voxl-docker support multi stage deployment and if so how would i go about it ? or any useful tips ?

Best regards

Chad Sweet · 20 Oct 2021, 15:59

Some folks have used the SD Card, though it's really slow. The recommended approach would be to build it off target, compress it, then copy it over to target

modaltb · 20 Oct 2021, 15:59

I didn't know Docker had this feature, so thanks for that tip!

Docker built on VOXL is running at version 1.9.0 and from some articles I read it looks like multistage build started in 17.06 (https://docs.docker.com/engine/release-notes/prior-releases/)

So I don't believe this is supported.