Setup repo that works with mkosi so you can install while offline

reposetup

#!/usr/bin/env bash
# Run this from inside a repo container
# After starting your repo with "machinectl start repo" you can create new containers offline using:
# mkosi -d centos_epel -r 8 --mirror=http://centos.repo.lan --hostname=cheese -o /var/lib/machines/cheese
# I have "10.1.1.2 centos.repo.lan" in /etc/hosts
# mkosi also needs to be manually patched to disable gpg checking.  No flag for it as of today.
# Also no usable flags to disable all repos. --repositories='!*' does not work yet.
# So I have to make a lot of symlinks to prevent it from failing.

WEBROOT=/var/www/html
CENTOS=$WEBROOT/centos/8
APPSTREAM=$CENTOS/AppStream
APPSTREAMOS=$APPSTREAM/x86_64/os
INSTALLROOT=$CENTOS/.root
EPEL=$WEBROOT/epel/8/Everything

dnf -y --releasever=8 --disablerepo=local install httpd createrepo yum-utils
yum-config-manager --enable powertools
yum-config-manager --enable epel
systemctl enable httpd

mkdir -p $APPSTREAMOS $INSTALLROOT $EPEL

dnf -y --releasever=8 --disablerepo=local --installroot=$INSTALLROOT --downloadonly --downloaddir $APPSTREAMOS install $(</root/pkglst)
createrepo $APPSTREAMOS

ln -s $APPSTREAM $CENTOS/BaseOS
ln -s $APPSTREAM $CENTOS/extras 
ln -s $APPSTREAM $CENTOS/centosplus
ln -s $APPSTREAMOS $EPEL/x86_64

repoupdate

#!/usr/bin/env bash
# Run this from inside a repo container
# This will update your repo.  Run it after updating /root/pkglst or when your repo is outdated.

CENTOS=/var/www/html/centos/8
APPSTREAMOS=$CENTOS/AppStream/x86_64/os
INSTALLROOT=$CENTOS/.root

dnf -y --releasever=8 --disablerepo=local --installroot=$INSTALLROOT --downloadonly --downloaddir $APPSTREAMOS install $(</root/pkglst)
createrepo --update $APPSTREAMOS