diff3
Compare three files line by line. More information: <https://www.gnu.org/software/diffutils/manual/html_node/Invoking-diff3.html>.
RUN apt-get update && \
apt-get install -y diffutils
RUN apt-get update && \
apt-get install -y diffutils
RUN apk add diffutils
RUN pacman -S --noconfirm diffutils
RUN apt-get update && \
apt-get install -y diffutils
RUN yum install -y diffutils
RUN dnf install -y diffutils
RUN apt-get update && \
apt-get install -y diffutils