it seems that /usr/bin/env bash shebang does work under systemd environment

android-usb-vnc/system/usr/local/bin/x11vnc_for_android.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -euo pipefail
 
 ACTION="$1"

android-usb-vnc/system/usr/local/bin/xpra_attach_hdpi.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -euo pipefail
 
 set -x

android-usb-vnc/system/usr/local/bin/xpra_for_android.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -euo pipefail
 
 ACTION="$1"

android-usb-vnc/system/usr/local/bin/xvfb_for_android.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -euo pipefail
 
 set -x