mattermost must be run with PWD=/opt/mattermost

Signed-off-by: Jeff Carr <jcarr@wit.com>

files/usr/bin/mattermost

@@ -1 +0,0 @@
-../../opt/mattermost/bin/mattermost

files/usr/bin/mattermost

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+cd /opt/mattermost
+./bin/mattermost --config /etc/mattermost/config.json

postinst

@@ -1,3 +1,16 @@
-#!/bin/sh -x
+#!/bin/sh
 
-systemctl status mattermost.service
+echo
+echo systemctl status mattermost.service
+echo
+echo 'su - postgres'
+echo 'psql'
+echo '\\db  # will list the tablespaces'
+echo '\\dg  # will list users'
+echo
+echo createuser --interactive -P blah
+echo createuser -P -s -e jcarr
+echo dropuser jcarr
+echo '$ psql -U postgres'
+echo " db> ALTER USER postgres with password 'your-pass';"
+echo