Just did a sequential run (to get some better measurements), and this is an excerpt of the things happening in the PostgreSQL instance inside the Docker container, for creating and dropping the databases:

    08:25:37.114 UTC [1456] LOG:  statement: CREATE DATABASE "test_1675239937111796557" WITH template = test_template
    [noise]
    08:25:48.002 UTC [1486] LOG:  statement: DROP DATABASE "test_1675239947937354435"

Start time of first test: 2023-02-01 08:25:03.633 UTC

Finish time of last test: 2023-02-01 08:26:13.861 UTC

82 tests, or 0.856 seconds per test (sequentially).

In parallel, we take 6.941 seconds for 82 tests, or 0.085 seconds per test.