Update the config file

workflow/configs/biohpc.config

 singularity {
   enabled = true
-  runOptions = ''                             // Please do NOT use "--disable-cache" in this runOptions. 
+  runOptions = ' -B /work:/work,/project:/project,/archive:/archive '                             // Please do NOT use "--disable-cache" in this runOptions. 
                                               // Starting from version 2.0.0, the astrocyte_cli will clean up the cache automatically.
   // runOptions = '--bind /vagrant:/vagrant'  // Use this one for vagrant development env only
   cacheDir = "$baseDir/images/singularity"    // Singularity images specified in `workflow_containers` of astrocyte_pkg.yml will be saved to 
@@ -11,17 +11,15 @@ singularity {
 process {
     executor = 'local'
     withName:parameters {
-        // Path to the singularity image files. The prefix "file://images/singularity/" is the cacheDir folder 
-        // in the singularity settings. Please keep this prefix for the path of your singularity images
-        container = 'file://images/singularity/ubuntu-latest.img'
+        container = 'docker://git.biohpc.swmed.edu:5050/astrocyte/workflows/biohpc/astrocyte_example_wordcount/ubuntu:latest'
     }
     withName:uppercase {
-        container = 'file://images/singularity/ubuntu-latest.img'
+        container = 'docker://git.biohpc.swmed.edu:5050/astrocyte/workflows/biohpc/astrocyte_example_wordcount/ubuntu:latest'
     }
     withName:tolines {
-        container = 'file://images/singularity/ubuntu-latest.img'
+        container = 'docker://git.biohpc.swmed.edu:5050/astrocyte/workflows/biohpc/astrocyte_example_wordcount/centos:centos8'
     }
     withName:wordcounts {
-        container = 'file://images/singularity/centos-centos8.img'
+        container = 'docker://git.biohpc.swmed.edu:5050/astrocyte/workflows/biohpc/astrocyte_example_wordcount/centos:centos8'
     }
 }