example of how to forward ssh-agent into an lxc

lxc-agent-forward.sh

#!/bin/bash

# Example Script to forward ssh-agent socket into an unprivileged lxc
# This allows access to the ssh-agent by commands executed with lxc-attach

set -m

CONTAINER=$1  # e.g., test-container
REMOTE=$2  # e.g, [email protected]

bash -c "
trap '{ kill 0; exit; kill 0; }' SIGINT;
lxc-usernsexec rm .local/share/lxc/$CONTAINER/rootfs/tmp/ssh-agent-sock;
while true;
	do socat UNIX:$SSH_AUTH_SOCK EXEC:'lxc-usernsexec socat STDIN UNIX-LISTEN\:.local/share/lxc/$CONTAINER/rootfs/tmp/ssh-agent-sock'
done
" &
pid=$!

# do your stuff here
lxc-attach -v SSH_AUTH_SOCK=/tmp/ssh-agent-sock -n $CONTAINER -- ssh $REMOTE

# clean up when done
kill -sigint -$pid