Can not run Generate reference mask array file

[khoahoc0508]

After pulling docker image, I can not run nextflow pipeline to generate reference mask array. Terminal show error:
$ nextflow run mask_ref.nf --test -profile test_docker
N E X T F L O W ~ version 21.10.6
Launching mask_ref.nf [ecstatic_dalembert] - revision: 634925b439
Cannot enable more than one container engine -- Choose either one of: docker, singularity

Please update instructions to use. Thanks!

[rderelle]

Same error here. Thanks.

[skinneram86]

Another with the same issue. Any updates?