ncat
Use the normal cat functionality over networks. More information: <https://manned.org/ncat>.
RUN apt-get update && \
apt-get install -y ncat
RUN apt-get update && \
apt-get install -y ncat
RUN apk add nmap
RUN pacman -S --noconfirm nmap
RUN apt-get update && \
apt-get install -y ncat
RUN yum install -y nmap-ncat-2
RUN dnf install -y nmap-ncat-2
RUN apt-get update && \
apt-get install -y nmap