Based on https://hub.docker.com/r/litespeedtech/openlitespeed I wanted to use lsphp80-dev / lsphp81-dev and therefore Created this dockerfile:
FROM litespeedtech/openlitespeed:1.7.16-lsphp80
WORKDIR /var/www/vhosts
RUN apt update
RUN apt install -y wget
RUN wget...