I've been running redis in Docker for a number of sites, to perform things such as storing session data, hubot settings, and more.
I recently ran into a problem on one of my systems where it was reporting:
Can't save in background: fork: Out of memory
I've been working on building PHP Docker images for the purposes of testing, as well as to potentially provide images containing the Swoole extension. This is generally straight-forward, as the official PHP images are well-documented.
This week, I decided to see if I could build Alpine-based images, as they can greatly reduce the final image size. And I ran into a problem.