Building the docker image used for overhead calculation times out on initial build

[Benezivas]

The overhead calculation docker image fails to build when first starting a battle that enables these overhead calculations.
Building the docker image on the following runs works without issues after the initial failure to build.

This is reproducible on clean installations or after wiping all partially or completely built docker images from the system (e.g. as an extreme measure using docker system prune --all --force) using algobattle version 2.0.2.

The issue could be that the build time used for these overhead calculations, which is configured in algobattle/config/config_delaytest.ini is set to 30 seconds, which may not be enough for slower machines.