ENH Add AlmaLinux 8 based image

[jakirkham]

• Adds an AlmaLinux based image for use in conda-forge builds
• Starts by using version 8 (though makes it easy to update this version later)
• Does a multiarch build (should simplify handling different supported architectures)

[beckermr]

We definitely want "8" or maybe conda_2_28 somewhere in the image name.

[jakirkham]

Currently that is handled with the DOCKERTAG, which is set to 8 (as opposed to latest). This follows a similar strategy that has been used with the CUDA images in the past

[beckermr]

@jakirkham Shall we merge?

[jakirkham]

SGTM. Thanks for helping get this across the finish line Matt! 🙏

[isuruf]

Why is a new Dockerfile needed?

[isuruf]

Please re-use linux-anvil-comp7/Dockerfile

[jakirkham]

Because they are different OSes and versions, which resulted in subtle differences

Also when we run into issues specific to this distro & version, it will be helpful to have them siloed

Most of the things that can be reused already are through refactored scripts that all Dockerfiles use

Think it would be better to keep this distinct

[isuruf]

What are these subtle differences? It would good to have a diff to see what changed for easier review.

[jakirkham]

I'm sorry, but I don't plan to pick up this task

From the conda-forge meeting earlier it sound like others don't care or (in some cases don't want) this change

Would suggest converting this to an issue if we want to discuss further

[beckermr]

Here is the diff

0a1
> ARG DISTRO_ARCH
3c4
< FROM ${DISTRO_NAME}:${DISTRO_VER}
---
> FROM --platform=linux/${DISTRO_ARCH} ${DISTRO_NAME}:${DISTRO_VER}
6a8
> ARG DISTRO_ARCH
9c11,12
< ENV DISTRO_NAME=${DISTRO_NAME} \
---
> ENV DISTRO_ARCH=${DISTRO_ARCH} \
>     DISTRO_NAME=${DISTRO_NAME} \
25c28
< RUN rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-${DISTRO_VER}
---
> RUN rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-AlmaLinux
31a35,36
>         glibc-minimal-langpack \
>         glibc-langpack-en \
41,61d45
< # Download and cache new compiler packages.
< # Should speedup installation of them on CIs.
< RUN source /opt/conda/etc/profile.d/conda.sh && \
<     conda activate && \
<     conda create -n test --yes --quiet --download-only \
<         conda-forge::binutils_impl_linux-64 \
<         conda-forge::binutils_linux-64 \
<         conda-forge::gcc_impl_linux-64 \
<         conda-forge::gcc_linux-64 \
<         conda-forge::gfortran_impl_linux-64 \
<         conda-forge::gfortran_linux-64 \
<         conda-forge::gxx_impl_linux-64 \
<         conda-forge::gxx_linux-64 \
<         conda-forge::libgcc-ng \
<         conda-forge::libgfortran-ng \
<         conda-forge::libstdcxx-ng && \
<     conda remove --yes --quiet -n test --all && \
<     conda clean -tiy && \
<     chgrp -R lucky /opt/conda && \
<     chmod -R g=u /opt/conda
< 
65c49
< COPY linux-anvil-cos7-x86_64/entrypoint_source /opt/docker/bin/entrypoint_source
---
> COPY linux-anvil-alma/entrypoint_source /opt/docker/bin/entrypoint_source

[beckermr]

Entrypoint scripts are identical.

[beckermr]

I agree that different linux distros should be siloed FWIW. Future alma versions should likely use the same image under the assumption that they won't break or change too many things.

[ocefpaf]

LGTM. Merge? Or do we need any more changes here?

[beckermr]

Let's merge.