/etc/init/cups.override is in lxc-android-config 0.230+16.04.20160328-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | # cups - CUPS Printing spooler and server
# overrides for touch
# socket activation
start on socket PROTO=inet PORT=631 ADDR=127.0.0.1
# do not respawn when cupsd shuts down by itself
normal exit 0
# start cupsd in auto-shutdown mode
exec /usr/sbin/cupsd -f -l
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