Capture bash command error in file

Tee stderr to a file for the next command while keeping the original exit code through PIPESTATUS, then annotate the build with it.

[BASH] Repeat Build Step

A bash function that stamps out the same YAML build step for every environment, so the pipeline file stays short.

Selenoid Parallel CI testing

Running Selenoid beside the test runner in CI for parallel browser tests, with video recording and one Selenoid per build agent.