etags
Emacs is a powerful, customizable, self-documenting, modeless text
RUN apt-get update && \
apt-get install -y emacs
RUN apt-get update && \
apt-get install -y emacs
RUN apk add emacs
RUN pacman -S --noconfirm emacs
RUN apt-get update && \
apt-get install -y emacs
RUN yum install -y emacs
RUN dnf install -y emacs
RUN apt-get update && \
apt-get install -y emacs