diff --git a/cibersortx/04_04_2020/.gitignore b/cibersortx/04_04_2020/.gitignore
new file mode 100755
index 0000000..acabb78
--- /dev/null
+++ b/cibersortx/04_04_2020/.gitignore
@@ -0,0 +1 @@
+fractions_latest.sif
diff --git a/cibersortx/04_04_2020/README.md b/cibersortx/04_04_2020/README.md
new file mode 100755
index 0000000..12a4cc9
--- /dev/null
+++ b/cibersortx/04_04_2020/README.md
@@ -0,0 +1,45 @@
+# Installation
+
+```bash
+## Commands used for installing the software
+
+module load singularity/3.11.4
+singularity pull docker://cibersortx/fractions # no version name is provided
+
+## Ignore all downloaded/installed files
+echo "fractions_latest.sif" > .gitignore
+
+#   Set loose permissions
+chmod 775 -R ..
+
+## Version control files
+git add .gitignore
+git add README.md
+```
+
+# Reproducibility
+
+```bash
+## Evaluate the following commands
+module list
+date
+echo "User: ${USER}"
+echo "Hostname: ${HOSTNAME}"
+```
+
+```bash
+## copy paste the output from the previous commands
+$ module list
+
+Currently Loaded Modules:
+  1) JHPCE_ROCKY9_DEFAULT_ENV   2) JHPCE_tools/3.0   3) singularity/3.11.4
+
+ 
+
+$ date
+Thu Feb  8 01:47:31 PM EST 2024
+$ echo "User: ${USER}"
+User: neagles
+$ echo "Hostname: ${HOSTNAME}"
+Hostname: compute-124.cm.cluster
+```