Determine Ruby Version in Images (regular expression cve(

merefield · October 30, 2026, 7:19pm

From the Dockerfile in discourse_docker, e.g.:

image/base/Dockerfile?utm_source=chatgpt.com

main

# NAME:     discourse/base
# VERSION:  release

ARG DEBIAN_RELEASE=trixie
ARG RUBY_VERSION=4.0.9
ARG FROM_DOCKER_IMAGE_TAG=${RUBY_VERSION}-${DEBIAN_RELEASE}-slim
ARG DATESTAMP=0

FROM discourse/ruby:${FROM_DOCKER_IMAGE_TAG} AS builder
ARG DATESTAMP
ARG DEBIAN_RELEASE
ENV DEBIAN_RELEASE=${DEBIAN_RELEASE}
RUN echo "deb http://deb.debian.org/debian ${DEBIAN_RELEASE}-backports main" > "/etc/apt/sources.list.d/${DEBIAN_RELEASE}-backports.list"
RUN apt update &&\
DEBIAN_FRONTEND=noninteractive apt-get -y install wget \
    autoconf build-essential \
    git \
    cmake \
    gnupg \
    libpcre2-dev \

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Determine Ruby Version in Images (regular expression cve(

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