readtags
build tag file indexes of source code definitions
RUN apt-get update && \
apt-get install -y universal-ctags
RUN apt-get update && \
apt-get install -y universal-ctags
RUN apk add ctags
RUN pacman -S --noconfirm ctags
RUN apt-get update && \
apt-get install -y universal-ctags
RUN yum install -y ctags
RUN dnf install -y ctags