Docker does not have a -d option anymore

This was depricated in 1.8 and is now gone
https://github.com/docker/docker/blob/master/CHANGELOG.md#cli

images/initializeBaseUbuntuImage.sh

@@ -108,7 +108,7 @@ After=network.target docker.socket
 Requires=docker.socket
 
 [Service]
-ExecStart=/usr/bin/docker -d -H fd:// -s btrfs -g /home/yellowtent/data/docker --log-driver=journald --exec-opt native.cgroupdriver=cgroupfs
+ExecStart=/usr/bin/docker daemon -H fd:// -s btrfs -g /home/yellowtent/data/docker --log-driver=journald --exec-opt native.cgroupdriver=cgroupfs
 MountFlags=slave
 LimitNOFILE=1048576
 LimitNPROC=1048576