Add db in INSTALL.md

INSTALL.md

@@ -3,14 +3,40 @@ Initial requirements
 
 ```
 # apt install screen
-# adduser etherpad
+```
+
+Create DB
+=========
+
+```
+# apt install postgresql postgresql-client
+# systemctl enable --now postgresql
+```
+
+Check /etc/postgresql/xx/main/pg_hba.conf for localhost contains
+```
+host    all             all             127.0.0.0/24            md5
+```
+
+```
+# su - postgres
+$ createuser <REDACTED_USER>
+$ createdb <REDACTED_DB> -O <REDACTED_USER>
+$ psql <REDACTED_DB>
+  ALTER USER <REDACTED_USER> WITH PASSWORD '<REDACTED_PASSWORD'> ;
+  ALTER ROLE;
+  \q
 ```
 
 Install Etherpad-lite
 =====================
 
-Log as etherpad user
-`# su etherpad && cd`
+Add etherpad user
+
+```
+# adduser etherpad
+# su etherpad && cd
+```
 
 Install and run etherpad 
 ```