How to copy files to a LXC container

Once you’ve created a LXC container using a command like

lxc launch ubuntu:18.04 mycontainer

you can push files to the container using

lxc file push myfile.zip mycontainer/root/

This will copy the local file myfile.zip to /root/myfile.zip on the container. Ensure that your path ends with /, since lxc file push myfile.zip mycontainer/root will show this error message:

Error: Path already exists as a directory: File too large

In that case, add a slash (/) to the end of your destination path (e.g. mycontainer/root => mycontainer/root/).