/usr/share/lxc/config/alpine.common.conf is in lxc-templates 2.0.7-0ubuntu1~16.04.2.
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 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | # This derives from the global common config.
lxc.include = /usr/share/lxc/config/common.conf
# Doesn't support consoles in /dev/lxc/.
lxc.devttydir =
# Drop another (potentially) harmful capabilities.
lxc.cap.drop = audit_write
lxc.cap.drop = ipc_owner
lxc.cap.drop = mknod
lxc.cap.drop = setpcap
lxc.cap.drop = sys_nice
lxc.cap.drop = sys_pacct
lxc.cap.drop = sys_ptrace
lxc.cap.drop = sys_rawio
lxc.cap.drop = sys_resource
lxc.cap.drop = sys_tty_config
lxc.cap.drop = syslog
lxc.cap.drop = wake_alarm
# Mount /run as tmpfs.
lxc.mount.entry=run run tmpfs rw,nodev,relatime,mode=755 0 0
# Mount /dev/shm as tmpfs; needed for building python and possibly other packages.
lxc.mount.entry=shm dev/shm tmpfs rw,nodev,noexec,nosuid,relatime,mode=1777,create=dir 0 0
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