Zephyr toolchain version - Reproducible builds

[vChavezB]

I am attempting to have reproducible builds from my ci/cd and my development machine with this docker image. I noticed that the Zephyr toolchain version is 0.15.1

nrf-docker/Dockerfile

Line 87 in 9d3444f

ZEPHYR_TOOLCHAIN_URL="https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v0.15.1/zephyr-sdk-0.15.1_linux-x86_64.tar.gz" \

On my Windows machine I have installed the Nordic connect SDK (v2.0.0) and Zephyr SDK through the NRF Connect for Desktop software. I noticed that the zephyr toolchain that I have installed is v0.14.1. This version includes GCC-ARM v10. However, the docker image includes toolchain v0.15.1 which has GCC-ARM v12.

I would like to know how can I change the toolchain version so it matches my development machine. I think that for the NRF Connect SDK v2.0.0 the zephyr toolchain version is 0.14.1 right?

Further details on how I run this docker container on my ci/cd

west init -m https://github.com/nrfconnect/sdk-nrf/ --mr v2.0.0
west update --narrow -o=--depth=1
west build MY_PROJECT_DIR --board MY_BOARD

[coderbyheart]

I would like to know how can I change the toolchain version so it matches my development machine.

You can change the URL to point to the release you want.

I think that for the NRF Connect SDK v2.0.0 the zephyr toolchain version is 0.14.1 right?

Yes.

[vChavezB]

Ok I see. That could come in handy to reduce bandwidth of the ci/cd servers and time of the jobs. I think I will add an argument to the dockerfile to change the tool chain installed

Something like here

https://github.com/zephyrproject-rtos/docker-image/blob/1a0e373790512f828c698b7d87055956963ba9f7/Dockerfile#L3

Then I can automatically build this repository for different toolchain versions

[vChavezB]

Just as a sidequestion, why is it that this docker image uses the latest zephyr toolchain (i.e., v0.15.1) ? From my perspective I would expect that if I pull the docker image for tag v2.0-branch I would get included the toolchain v0.14.1 which is the same one that is installed via the NRF Connect desktop app. Then both docker image and NRF Connect desktop app would have the same version.

Maybe I misunderstood the real purpose of this repository.
Best regards
Victor

[coderbyheart]

Generally the purpose is to provide a Docker image that can compile a release branch. The purpose is not to exactly replicate the software configuration used back then.

[coderbyheart]

I think I will add an argument to the dockerfile to change the tool chain installed

Note that this has been added in c750a34

[coderbyheart]

nrf-docker/Dockerfile

Line 5 in f8f5835

ARG ZEPHYR_TOOLCHAIN_VERSION=0.15.1