update-openssh-known-hosts
download, filter and merge known_hosts for OpenSSH
RUN apt-get update && \
apt-get install -y openssh-known-hosts
RUN apt-get update && \
apt-get install -y openssh-known-hosts
RUN apt-get update && \
apt-get install -y openssh-known-hosts
RUN apt-get update && \
apt-get install -y openssh-known-hosts