Dockerfile: add tcpdump for debugging
We'll not infrequently try to debug, and this is easier and
less error prone than trying to 'oc debug node' and run toolbox.
@@ -15,7 +15,7 @@ RUN INSTALL_PKGS=" \
libmnl libnetfilter_conntrack conntrack-tools \
libnfnetlink iproute procps-ng openssl \
iputils binutils xz util-linux dbus nftables \
- " && \
+ tcpdump" && \
yum install -y --setopt=tsflags=nodocs --setopt=skip_missing_names_on_install=False $INSTALL_PKGS && \
mkdir -p /etc/sysconfig/cni/net.d && \
yum clean all && rm -rf /var/cache/*
