Switch scripts to bash

Closes #268, #269

0.17/files/docker-entrypoint.sh

@@ -35,7 +35,7 @@ if [ "$NRTMPSAVES" -gt 0 ]; then
   rm -f "$SAVES"/*.tmp.zip
 fi
 
-if [[ $UPDATE_MODS_ON_START ]]; then
+if [[ ${UPDATE_MODS_ON_START:-} ]]; then
   ./docker-update-mods.sh
 fi
 

0.17/files/scenario.sh

@@ -1,4 +1,4 @@
-#!/bin/sh -x
+#!/bin/bash -x
 if [ -z "$1" ]; then
   echo "No argument supplied"
 fi

0.17/files/scenario2map.sh

@@ -1,4 +1,4 @@
-#!/bin/sh -x
+#!/bin/bash -x
 if [ -z "$1" ]; then
   echo "No argument supplied"
 fi

0.17/files/update-mods.sh

@@ -12,7 +12,7 @@ print_step()
   echo "$1"
 }
 
-print_success() 
+print_success()
 {
   echo "$1"
 }