Lock the screen to a PNG background

Simple screen locker built for the i3 window manager.
More information: <https://i3wm.org/i3lock>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

i3lock --image {{path/to/file.png}}

click the source code to copy install i3lock on any operating system with command-not-found.com