Docker build fails on unit tests

[Belorus]

Console output:

FAIL src/util/dateTimes.test.js
  ● time is formatted to the correct time zone

    expect(received).toBe(expected) // Object.is equality

    Expected: "7:30:00 pm"
    Received: "6:30:00 pm"

      28 |   let timeToday = date + 'T18:30:00Z' // As from server in UTC
      29 |
    > 30 |   expect(format(timeToday, timeFormatter)).toBe('7:30:00 pm') // as BST
         |                                            ^
      31 | })
      32 |

      at Object.<anonymous> (src/util/dateTimes.test.js:30:44)

Docker:
Server: Docker Engine - Community
Version: 20.10.0

Env:
GMT+03 (Minsk)
git bash
Windows 10 20H2 v19042

Removing single broken test helps, and build creates a .zip