The Laravel News site has a new tutorial posted showing how to speed up your PHP execution when developing with Docker by making use of the OPCache functionality.
If you’re on Docker for Mac or Docker for Windows, you might see some noticeable slowness and time to the first byte (TTFB) depending on your application’s setup. One of the most important things you can do to improve performance is enabling the OPCache module (regardless of the development environment). There are other things like volume caching (if possible), but OPcache is a win that you want in any environment you’re running PHP applications.
The tutorial starts by sharing a basic Opcache configuration, setting values for timestamp validation, memory consumption, and fast shutdown. These values are static and not very flexible so they change things up by making them able to be set as a part of the Docker build process. The post includes the changes you'll need to make to your Docker configuration to make this setup work in two ways: either copying the file in on build or making use of environment variables to set the configuration options at runtime.