diff --git a/doc/ADMIN.md b/doc/ADMIN.md
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index 0000000..0b5199f
--- /dev/null
+++ b/doc/ADMIN.md
@@ -0,0 +1,4 @@
+The Postgresql admin user credentials:
+
+Username: __DB_USER__
+Password: __DB_PWD__
diff --git a/doc/POST_INSTALL.md b/doc/POST_INSTALL.md
new file mode 100644
index 0000000..0b5199f
--- /dev/null
+++ b/doc/POST_INSTALL.md
@@ -0,0 +1,4 @@
+The Postgresql admin user credentials:
+
+Username: __DB_USER__
+Password: __DB_PWD__