Allow easier customization of the .env file #9808

Job	Run time
Core running from build / Core running from build / Linux	1m 59s
Core running from src / Core running from src / Linux	1m 58s
Core running from build / Core running from build / Windows	3m 13s
Core running from src / Core running from src / Windows	3m 0s
Core running from build / Core running from build / MacOS	2m 35s
Core running from src / Core running from src / MacOS	2m 0s
Gutenberg running from build / Gutenberg running from build / Linux	8m 5s
Gutenberg running from src / Gutenberg running from src / Linux	8m 7s
Gutenberg running from build / Gutenberg running from build / Windows	12m 59s
Gutenberg running from src / Gutenberg running from src / Windows	13m 24s
Gutenberg running from build / Gutenberg running from build / MacOS	8m 39s
Gutenberg running from src / Gutenberg running from src / MacOS	7m 15s
Slack Notifications	0s
Failed workflow tasks	0s
	1h 13m 14s

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