tkdiff
Graphical front-end to CVS and Subversion
RUN apt-get update && \
apt-get install -y tkcvs
RUN apt-get update && \
apt-get install -y tkcvs
RUN apt-get update && \
apt-get install -y tkcvs
RUN dnf install -y tkcvs
RUN apt-get update && \
apt-get install -y tkcvs