linux containers

Davide Airaghi October 26, 2025

Docker: Update all the images

If you want to pull and update all the images you have so far downloaded (and are still present on your system) using docker you can execute the following command: for IMAGE in $( LANG=en docker image ls -a --format table | grep -v -E "^REPOSITORY"…

Davide Airaghi February 23, 2015

Slackware: CentOS linux container

If you need to create a CentOS based linux container on your Slackware here you can find how i've made it. Before you start

(re)compile your kernel including every config option needed to have lxc-checkconfig output "enable" in each line.
(re)compile your kernel to add support for "networking bridge"
update rpm package using the one found here
install yum package, you can find it here
make sure to have lxc package installed (it's in the main Slackware repository)
make sure tu have installed bridge-utils package (it's in the main Slackware repository)
make sure to have enough free disk space (my setup used at least 400MB)
add at the end of /etc/rc.d/rc.local the following lines /usr/sbin/brctl addbr br0 /usr/sbin/brctl br0 10.0.0.1/24 /usr/sbin/iptables -t nat -A POSTROUTING -s 10.0.0.100 -o eth0 -j MASQUERADE /sbin/sysctl net.ipv4.ip_forward=1