Preparing a Centos VirtualBox with Docker.... putting it all together

sudo vi /etc/sysconfig/network-scripts/ifcfg-enp0s3
add these 3 lines:
ONBOOT=yes
DNS1=8.8.8.8
DNS2=8.8.4.4


sudo reboot now
ping google.com
sudo yum install gcc kernel-devel-$(uname -r)

now you can install VirtualBox Guest Additions (Devices/Insert Guest Additions CD image)

to install DOcker https://docs.docker.com/install/linux/docker-ce/centos/#install-from-a-package

sudo yum check-update
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
sudo yum install docker-ce
sudo systemctl start docker
sudo usermod -aG docker $(whoami)
sudo docker run hello-world

you can now reboot




Some fine tuning on VB:
File/Preferences/Input:
- set Host Key Combination
- disable "auto capture Keyboard"

General/Advanced/Shared Clipboard set to Bidirectional