pcregrep
grep utility that uses perl 5 compatible regexes.
RUN apt-get update && \
apt-get install -y pcregrep
RUN apt-get update && \
apt-get install -y pcregrep
RUN pacman -S --noconfirm pcregrep
RUN apt-get update && \
apt-get install -y pcregrep
RUN yum install -y pcregrep
RUN dnf install -y pcregrep
RUN apt-get update && \
apt-get install -y pcregrep