PHP/Apache Optimizations?

[ghost]

Hi, this is a great project! It made it very easy to test a QGIS Server install across multiple hardware configurations in order to benchmark performance- trying to get an idea what kind of hardware would be required.

Are there any performance optimizations you could recommend to speed up the docker image? Do you have any idea where the typical bottleneck would be for QGIS Server- at the CPU, RAM, or PHP code? I imagine it is is the CPU. Do you think it is safe to use this docker image in production?

Thanks for all of your hard work!