Merge branch 'switch_to_ducc' into 'NIFTy_7'

Switch to DUCC

See merge request !530
12 jobs for NIFTy_7 in 13 minutes and 9 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  Build Docker
passed build_docker_from_cache #1103518

00:00:17

 
  Test
passed test_mpi #1103520

00:00:19

passed test_serial #1103519

00:05:02

86.0%
 
  Demo Runs
passed run_bernoulli #1103527

00:00:31

passed run_curve_fitting #1103528

00:00:29

passed run_getting_started_1 #1103523

00:00:34

passed run_getting_started_2 #1103524

00:01:00

passed run_getting_started_3 #1103525

00:02:34

passed run_getting_started_mf #1103526

00:07:49

passed run_ipynb0 #1103521

00:01:36

passed run_ipynb1 #1103522

00:00:42

passed run_visual_mgvi #1103529

00:01:23