Provide instruction on how to use the script

Author: matthias_schaub

postgres/scripts/backup.sh

@@ -1,9 +1,12 @@
 #!/bin/bash
 
-SSH_REMOTE_HOST=username@hostname
+# Run this script like this:
+# PGPASSWORD=password SSH_REMOTE_HOST=username@hostname bash -c "./backup.sh"
+
+# SSH_REMOTE_HOST=username@hostname
+# PGPASSWORD="backupuserpassword"
 PGUSER="backup"
 PGDATABASE="mapswipe"
-PGPASSWORD="backupuserpassword"
 
 # Create a ssh tunnel in the background and save PID
 ssh -Cfo ExitOnForwardFailure=yes -NL 1111:localhost:5432 ${SSH_REMOTE_HOST}