Dockerfile build failures due to deprecated centos image

[n-jay]

Describe the bug
Dockerfile builds of components (rqd, cuesubmit, cuegui) fail due to CentOS 7 reaching EOL in June 30th 2024.

To Reproduce
Steps to reproduce the behavior:
Run Dockerfile builds of components with CentOS 7 as base image.

Expected behavior
Successful build of docker image of respective component.

Screenshots

Version Number
0.34

Additional context
Discovered as it results in packaging-pipeline failing.
Should be updated to a CentOS alternative.

[lithorus]

We're using this at work :

FROM centos:7
RUN sed -i s/mirror.centos.org/linuxsoft.cern.ch\\/centos-vault/g /etc/yum.repos.d/*.repo
RUN sed -i s/^#.*baseurl=http/baseurl=http/g /etc/yum.repos.d/*.repo
RUN sed -i s/^mirrorlist=http/#mirrorlist=http/g /etc/yum.repos.d/*.repo
RUN yum group install -y "Development Tools"
RUN sed -i s/mirror.centos.org/linuxsoft.cern.ch\\/centos-vault/g /etc/yum.repos.d/*.repo
RUN sed -i s/^#.*baseurl=http/baseurl=http/g /etc/yum.repos.d/*.repo
RUN sed -i s/^mirrorlist=http/#mirrorlist=http/g /etc/yum.repos.d/*.repo
RUN yum install -y cmake centos-release-scl
RUN sed -i s/mirror.centos.org/linuxsoft.cern.ch\\/centos-vault/g /etc/yum.repos.d/*.repo
RUN sed -i s/^#.*baseurl=http/baseurl=http/g /etc/yum.repos.d/*.repo
RUN sed -i s/^mirrorlist=http/#mirrorlist=http/g /etc/yum.repos.d/*.repo
RUN yum install -y devtoolset-9

Edit:
I should note that we recently (yesterday) switched to the linuxsoft.cern.ch mirror because there were problems with the vault.centos.org repo.

[n-jay]

It seems like this will require updating the obsolete image on Dockerhub as well
https://hub.docker.com/r/opencue/rqd

Encountering issues while building Blender image which uses RQD Dockerhub image as the base.