[curt15]

Would there still have been a problem if you were able to install multiple php versions side-by-side? HPC systems also have to manage multiple combinations of toolchains and environments and they typically use Modules[1] for that.

[1] https://hpc-wiki.info/hpc/Modules

[em-bee]

probably not, but it wasn't just php, and also one of the goals was the ability to scale up. and so having each service in its own container meant that we could move them to different machines and add more machines as needed.