chore(deploy): correct script path in server push scripts

helpers/push_production.sh

@@ -1,5 +1,3 @@
-#!/bin/bash
-
+#!/bin/sh
 echo "pushing to PRODUCTION"
-export server=flut
-./helpers/push_to_server.sh
+server=flut "$(dirname $0)/push_to_server.sh"

helpers/push_staging.sh

@@ -1,5 +1,3 @@
-#!/bin/bash
-
+#!/bin/sh
 echo "pushing to staging"
-export server=ebbe
-./helpers/push_to_server.sh
+server=ebbe "$(dirname $0)/push_to_server.sh"

helpers/push_to_server.sh

@@ -1,6 +1,6 @@
-#!/bin/bash
+#!/bin/sh
 
-if [ -z "$server" ]; then
+if test -z "$server"; then
     # server is not set or ""
     echo "please call push_staging.sh or push_production.sh"
     exit 1