checklink
tool to verify the links in a web page are still valid
RUN apt-get update && \
apt-get install -y w3c-linkchecker
RUN apt-get update && \
apt-get install -y w3c-linkchecker
RUN apt-get update && \
apt-get install -y w3c-linkchecker
RUN apt-get update && \
apt-get install -y w3c-linkchecker