[DATALAD] Configure containerized environment 'mvmnda'

.datalad/config

@@ -1,2 +1,5 @@
 [datalad "dataset"]
 	id = 5cd66ebd-28f4-439c-955a-e2545f2e67c8
+[datalad "containers.mvmnda"]
+	image = .datalad/environments/mvmnda/image
+	cmdexec = singularity exec {img} {cmd}

.datalad/environments/mvmnda/image

@@ -0,0 +1 @@
+../../../.git/annex/objects/gp/0K/SHA256E-s838635520--007cbd879c765b176fe5a0fd604b011a4ed2963b599ad5cd2ad844aa53c90cbd/SHA256E-s838635520--007cbd879c765b176fe5a0fd604b011a4ed2963b599ad5cd2ad844aa53c90cbd