Add profiles for singularity and docker

nextflow.config

@@ -7,3 +7,13 @@ process {
         container = "quay.io/biocontainers/multiqc:1.6--py36h24bf2e0_0"
     }
 }
+
+profiles {
+
+  singularity {
+    singularity.enabled = true
+  }
+  docker {
+    docker.enabled = true
+  }
+}