Re: [PATCH 1/9] tests/docker: Add debian-nios2-cross image

[Richard Henderson]

On 10/12/21 10:03 AM, Alex Bennée wrote:
> We need^H^H^H^H (might need, see bellow) a separate patch with:
>
> docker-image-debian10: NOUSER=1
>
> to ensure the images we base our "handbuilt" compilers on don't include
> a potentially clashing uid (which should only be added for local
> builds).

I think we ought to push this further back into docker.py.

I think that we should always have a separate image without the user installed.  When 
asking for a build with user installed, copy the nouser image (perhaps cached) and simply 
add the user.

> We need to split this like in hexagon and have a second stage which does
> a:
>
>    COPY --from=0 /usr/local /usr/local
>
> This will limit the size of the final image (and also avoid duplicting
> the UID in the hexagon build).

What are we eliminating from the image with the second FROM, since we then go back and add 
in all the build-dep for qemu.

There are one or two extra packages required for building gcc itself (e.g. libmpc) but 
they're not large.  Where does the major savings come from?


r~