Update crukmi.config

Fix the singularity cache dir and add process_single.

conf/crukmi.config

@@ -5,11 +5,8 @@ params {
   config_profile_url = 'http://scicom.picr.man.ac.uk/projects/user-support/wiki'
 }
 
-env {
-    SINGULARITY_CACHEDIR = '/lmod/nextflow_software'
-}
-
 singularity {
+  cacheDir = '/lmod/nextflow_software'
   enabled = true
   autoMounts = true
 }
@@ -22,6 +19,11 @@ process {
   maxErrors = '-1'
   maxRetries = 3
 
+  withLabel:process_single {
+    cpus = { check_max( 1 * task.attempt, 'cpus' ) }
+    memory = { check_max( 5.GB * task.attempt, 'memory' ) }
+  }
+
   withLabel:process_low {
     cpus = { check_max( 1 * task.attempt, 'cpus' ) }
     memory = { check_max( 5.GB * task.attempt, 'memory' ) }