update installation doc

doc/installation/Problems.md

@@ -0,0 +1,29 @@
+Problems
+========
+
+1. [max_map_count](#max_map_count)
+
+max_map_count
+-------------
+
+**Context**:
+
+    Elasticsearch in Docker on WSL2
+
+**Error**:
+```
+max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
+```
+
+**Resolution**:
+
+[Stackoverflow](https://stackoverflow.com/questions/42111566/elasticsearch-in-windows-docker-image-vm-max-map-count)
+
+In Powershell:
+```powershell
+wsl -d docker-desktop
+sysctl -w vm.max_map_count=262144
+echo "vm.max_map_count = 262144" > /etc/sysctl.d/99-docker-desktop.conf
+```
+
+restart docker-desktop