[PATCH 3/9] docker: Support building for multiple architectures

[Heinrich Schuchardt]

Am 4. November 2024 14:39:47 MEZ schrieb Simon Glass <sjg at chromium.org>:
>Add instructions on how to build the file for multiple architectures.
>Add a message indicating what is happening.
>
>Signed-off-by: Simon Glass <sjg at chromium.org>
>---
>
> tools/docker/Dockerfile | 7 +++++++
> 1 file changed, 7 insertions(+)
>
>diff --git a/tools/docker/Dockerfile b/tools/docker/Dockerfile
>index 967ac89fbde..c9d794082c8 100644
>--- a/tools/docker/Dockerfile
>+++ b/tools/docker/Dockerfile
>@@ -2,6 +2,9 @@
> # This Dockerfile is used to build an image containing basic stuff to be used
> # to build U-Boot and run our test suites.
> 
>+# Build with (for example):
>+# docker buildx build --platform linux/arm64/v8,linux/amd64 --tag sjg20/u-boot-gitlab-ci-runner-multiarch:jammy-20240808-03Nov2024 .
>+
> FROM ubuntu:jammy-20240808
> LABEL org.opencontainers.image.authors="Tom Rini <trini at konsulko.com>"
> LABEL org.opencontainers.image.description=" This image is for building U-Boot inside a container"
>@@ -9,6 +12,10 @@ LABEL org.opencontainers.image.description=" This image is for building U-Boot i
> # Make sure apt is happy
> ENV DEBIAN_FRONTEND=noninteractive
> 
>+ARG TARGETPLATFORM
>+ARG BUILDPLATFORM

Please, add comments describing what these variables are used for.

Best regards

Heinrich

>+RUN echo "Building $BUILDPLATFORM, for target $TARGETPLATFORM"
>+
> # Add LLVM repository
> RUN apt-get update && apt-get install -y gnupg2 wget xz-utils && rm -rf /var/lib/apt/lists/*
> RUN wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -