Linux – Kickstart Ubuntu 16.04 Post Install Chown

chown command issue in kickstart installation

I'm trying to run a chown myuser:myuser at the end of the %post section in my ks.cfg file. Everything before the chown runs successfully.

ks.cfg

#Generated by Kickstart Configurator
#platform=AMD64 or Intel EM64T

#System language
lang en_US
#Language modules to install
langsupport en_US
#System keyboard
keyboard us
#System mouse
mouse
#System timezone
timezone America/Denver
#Root password
rootpw --disabled
#Initial user
user myuser --fullname "" --iscrypted --password ##############################/
#Reboot after installation
reboot
#Use text mode install
text
#Install OS instead of upgrade
install
#Use hard drive installation media
# harddrive --dir=/ks.cfg --partition=4005-3596
cdrom 
#System authorization infomation
auth  --useshadow  --enablemd5
#Network information
network --bootproto=dhcp --device=eth0
#Firewall configuration
firewall --disabled
#Do not configure the X Window System
skipx

%packages
@ ubuntu-server
openssh-server
build-essential

%post --log=/root/ks-post.log
exec < /dev/tty6 > /dev/tty6 2> /dev/tty6
chvt 6
#mount the cd (ISO in my case) to copy files from it
#since this is chrooted environment
mount /dev/cdrom /mnt
# Make directories
echo "***Making Directories***"
mkdir -p /home/myuser/bcfiles
mkdir -p /home/myuser/bin
# Copy bcsetup files
echo "***Copying bcsetup Files***"
cp -r /mnt/postfiles/bcsetup /home/myuser/bin
cp -r /mnt/postfiles/bcsetup-dev /home/myuser/bin
# Copy bcfiles directory
echo "***Copying bcfiles Directory***"
cp -r /mnt/postfiles/bcfiles /home/myuser/
# Copy myuser Profile Configuration Files
echo "***Copying myuser Profile Configuration Files***"
cp -r /mnt/postfiles/.bash_logout /home/myuser/
cp -r /mnt/postfiles/.bashrc /home/myuser/
cp -r /mnt/postfiles/.profile /home/myuser/
# Applying permissions
echo "***Applying Permissions***"
chown myuser /home/myuser/.bashrc

ks.cfg test with –nochroot

%post --nochroot --log=/root/ks-post.log
# Make directories
echo "***Making Directories***"
mkdir -p /target/home/myuser/bcfiles
mkdir -p /target/home/myuser/bin
# Copy bcsetup files
echo "***Copying bcsetup Files***"
cp -r /cdrom/postfiles/bcsetup /target/home/myuser/bin
cp -r /cdrom/postfiles/bcsetup-dev /target/home/myuser/bin
# Copy bcfiles directory
echo "***Copying bcfiles Directory***"
cp -r /cdrom/postfiles/bcfiles /target/home/myuser/
# Copy myuser Profile Configuration Files
echo "***Copying myuser Profile Configuration Files***"
cp -r /cdrom/postfiles/.bash_logout /target/home/myuser/
cp -r /cdrom/postfiles/.bashrc /target/home/myuser/
cp -r /cdrom/postfiles/.profile /target/home/myuser/
# Applying permissions
echo "***Applying Permissions***"
chown myuser:myuser -R /target/home/myuser/

After the install cat /var/log/installer/syslog | grep kickseed shows:

kickseed: chown: unknown user myuser:myuser

Afterthoughts

I've tried several different routes so far. The same thing happens if I exclude --nochroot from %post. I've seen other ks.cfg configurations using chown myuser.myuser which hasn't worked either. Also attempted chown on individual files within /home/myuser/.

Any suggestions would be very much appreciated.

Updates

/etc/passwd and /etc/group both list myuser.
Output of groups myuser: myuser : myuser adm cdrom sudo dip plugdev lpadmin sambashare

Thoughts

At this point in time I'm thinking moving the scripts outside of /home/myuser/bin and into /usr/local/bin where I won't need to rely on chown.