diff --git a/001_documentation/Requirements/REQ0021/index.md b/001_documentation/Requirements/REQ0021/index.md
new file mode 100644
index 0000000..41898eb
--- /dev/null
+++ b/001_documentation/Requirements/REQ0021/index.md
@@ -0,0 +1,24 @@
+---
+tags: docker
+---
+
+# description
+
+docker and public endpoint
+
+| function | address                     |     |
+|----------|-----------------------------|-----|
+| DB       | demo_ls_db.louislabs.com   | 3013    |
+| cms      | demo_ls_cms.louislabs.com      |  3011     |
+| mobile   | demo_ls_mobile.louislabs.com   | 3012    |
+| T.B.A.   | T.B.A.   | 3014    |
+| T.B.A.   | T.B.A.   | 3015    |
+| T.B.A.   | T.B.A.   | 3016    |
+| T.B.A.   | T.B.A.   | 3017    |
+| T.B.A.   | T.B.A.   | 3018    |
+| T.B.A.   | T.B.A.   | 3019    |
+| T.B.A.   | T.B.A.   | 3010    |
+
+## TODO
+
+pending ssl certificate, currently using shared affine.louislabs.com
diff --git a/001_documentation/Requirements/index.md b/001_documentation/Requirements/index.md
index 5431949..d4264b6 100644
--- a/001_documentation/Requirements/index.md
+++ b/001_documentation/Requirements/index.md
@@ -22,3 +22,4 @@
 - [REQ0018: family photo of frameworks](./REQ0018/index.md)
 - [REQ0019: System architecture](./REQ0019/index.md)
 - [REQ0020: Mobile login flow](./REQ0020/index.md)
+- [REQ0021: description](./REQ0021/index.md)