Slow test execution within Docker containers

6/10 Medium

Running tests from within Docker containers takes excruciatingly long to complete, adding significant overhead to the development and testing workflow.

Docker

Sources

Rant: Docker is a labyrinth maze of brick walls and show-stopping issues that has done nothing but slow my development - ~comp
The usual response to this complaint in the Ruby/Rails ...

Collection History

Query: “What are the most common pain points with Ruby on Rails for developers in 2025?”4/9/2026

The biggest test suite I ever saw took 2 hours to run in a 60-machine cluster, so 120 hours of CI. Impossible to run locally, so major refactoring was borderline impossible without a huge feedback cycle.

Query: “What are the most common pain points with Docker for developers in 2025?”3/26/2026

when I run some things from within the docker container, such as tests, they can take an excruciatingly long time to run—only then did I discover that this is yet another docker issue.

Created: 3/26/2026Updated: 4/9/2026