Use vault for centos7 and remove centos6 build files

[isuruf]

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

[jakirkham]

Thanks Isuru! 🙏

CI was failing as the script hasn't been added. So added relevant suggestions to address below

[jakirkham]

It appears to still be picking up mirrorlist in a few places. Think we may need this workaround

docker-images/linux-anvil-aarch64-cuda/Dockerfile

Lines 53 to 59 in 60e5c0b

	# Fallback to CentOS vault for CentOS 8 support.
	RUN if [ "${DISTRO_NAME}${DISTRO_VER}" = "centos8" ]; then \
	find /etc/yum.repos.d/ -name "CentOS-*.repo" -exec \
	sed -i 's/mirrorlist/#mirrorlist/g;s|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' {} \; && \
	yum update -y --disablerepo=cuda && \
	/opt/docker/bin/yum_clean_all; \
	fi

[mariusvniekerk]

The script i used to get some centos stuff working again is this one

Bash Script

#!/bin/bash

# Define the base URL to use
BASEURL='http://vault.centos.org/centos/$releasever/os/$basearch/'

# Path to the repository file
REPO_FILE="/etc/yum.repos.d/CentOS-Base.repo"

# Backup the original repository file
cp $REPO_FILE $REPO_FILE.bak

# Function to update a repository section
update_repo_section() {
	local section=$1
	sed -i "/\[$section\]/,/\[/ {
        s|^mirrorlist=.*|#mirrorlist=disabled|
        s|^#baseurl=.*|baseurl=$BASEURL|
    }" $REPO_FILE
}

# List of repository sections to update
REPO_SECTIONS=("base" "updates" "extras" "centosplus")

# Update each repository section
for section in "${REPO_SECTIONS[@]}"; do
	update_repo_section $section
done

# Clean YUM cache
yum clean all

echo "Repository configuration updated. Please verify the changes in $REPO_FILE."

[mbargull]

I've added automerge label and am done with changes here.

[jakirkham]

Can we please finish reviewing before just merging?

[jakirkham]

Do we need all of these are can we limit to the one relevant for that architecture?

[isuruf]

I figured that it'd be better to keep all these hacks in one place. Otherwise there are different hacks accumulating in each image. I saw three different ways of doing the same thing done in slightly different ways.

[jakirkham]

Ok maybe we can drop these in one directory and add that. Then cleanup anything leftover after. Have tried something like this in commit: 9e83468

[mbargull]

Feel free to do sensible changes -- but it would be good to get working containers out rather than being meticulous about build scripts.
(N.B.: I would've done changes smaller than those being done from the get go.)

[jakirkham]

Ok tried to push a few changes that cleaned up a few things

Happy to discuss any of them as needed

Please let me know what you think 🙂

[mbargull]

Let's do some cleanup or possibly other/different cleanups after we've built some working cos7 containers.

[jakirkham]

Thanks all! 🙏