Update default config to be astrocyte and include astrocyte config.

workflow/configs/astrocyte.config

+env {
+  http_proxy = 'http://proxy.swmed.edu:3128'
+  https_proxy = 'http://proxy.swmed.edu:3128'
+  all_proxy = 'http://proxy.swmed.edu:3128'
+}
+
+singularity {
+  enabled = true
+}

workflow/configs/nextflow.config

 profiles {
   standard {
-    includeConfig 'biohpc.config'
+    includeConfig 'astrocyte.config'
     includeConfig 'cluster.config'
   }
   biohpc {
+    includeConfig 'cluster.config'
     includeConfig 'biohpc.config'
   }
   local {