[FIX] Run command with spur to better catching the exception.

- We use stdout and stderr to avoid the double logging format
- Spurs detects better the errors during the build so is easier to handle in such cases

[FIX] Just in case check is there is any image

[FIX] Better use check_call because no output is shown for a while and we know what that mean
1 job for master-task36720-truiz in 22 seconds (queued for 2 seconds)
Status Job ID Name Coverage
passed #305073