added link checker

zola/Dockerfile

 FROM rust:slim-bookworm
 
-RUN apt update && apt upgrade -y && apt install rsync wget -y
+RUN apt update && apt upgrade -y && apt install rsync wget nodejs npm -y
+RUN npm install broken-link-checker -g
 
 RUN wget https://github.com/getzola/zola/releases/download/v0.18.0/zola-v0.18.0-x86_64-unknown-linux-gnu.tar.gz && tar xzvf zola-v0.18.0-x86_64-unknown-linux-gnu.tar.gz && mv zola /usr/local/bin && chmod +x /usr/local/bin/zola