AbstractRedisContainer `.*Ready to accept connections.*\\n` Doesn't match custom installation images

[ranma2913]

To resolve the redis:7.2-alpine vulnerabilities I've build my own docker image for redis based on ubuntu:noble.

FROM ubuntu:noble

# List linux version
RUN cat /etc/issue

USER root

RUN echo "Installing Debian dependencies..." \
  # `apt-get update` caused error `W: GPG error: http://security.debian.org/debian-security stretch/updates InRelease: At least one invalid signature was encountered.` fix: https://github.com/debuerreotype/docker-debian-artifacts/issues/69#issuecomment-603864015
  export DEBIAN_FRONTEND="noninteractive" && \
    # `Error debconf: unable to initialize frontend: Redline` error. Fix: https://github.com/moby/moby/issues/27988#issuecomment-462809153
  echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections && \
  apt-get update && apt-get upgrade -y && \
  apt-get install --no-install-recommends --no-install-suggests -y \
    redis-server

# Create K8s run groups
ARG USER=default-docker
RUN groupadd --gid 2000 runAsGroup \
  && groupadd --gid 3000 fsGroup \
  && useradd --uid 1001 --gid 3000 --system --home /home --shell /bin/bash  -c "Default Dockerfile User" $USER \
  && usermod -a -G runAsGroup $USER

# Add 1001 to the 'redis' group.
RUN usermod -a -G redis $USER

The issue is the startup logs. On the redis:7.2-alpine image the startup logs are:

redis-1  | 1:M 18 Apr 2024 15:32:17.010 * Ready to accept connections tcp

On my custom ubuntu:noble image the startup logs are:

redis-1  | 7:M 18 Apr 2024 15:29:58.187 * Ready to accept connections

You can see the problem in the regex here: AbstractRedisContainer.java#L21 .*Ready to accept connections.*\\n requires 1 or more characters between the work connections and the \n character.

Suggested Solution:

1. Allow users to configure the readiness check
2. Change the regex to .*Ready to accept connections(.*)?\\n
3. Combination of both?

Let me know what you prefer and I can contribute a fix.