FROM docker.io/library/centos:7 RUN yum install -y https://research.cs.wisc.edu/htcondor/repo/8.9/htcondor-release-current.el7.noarch.rpm && \ yum install --nogpgcheck -y condor && \ yum install -y less && \ yum clean all RUN yum install -y iproute bind-utils nmap-ncat net-tools && \ yum clean all CMD bash -c 'cat <({ condor_master -f & tail --retry --pid $! -f /var/log/condor/MasterLog & })'