Busybox issue WP container

[LeonNabuurs]

Hi,
I am quite new to Docker, so forgive me stupid questions.....

I used the components in this repo and followed the video on youtube. But now I am almost ready I build the images and start the containers. Everything fine except for the wp-container, that exits right away. Message is about the Busybox, where it says 'less: unrecognized option: r'.
Someone recognizes this issue and knows how to solve?

Thanks