Use /usr/bin/env bash instead of /bin/bash for scripts

Azure/build_ansible_inventory.sh

@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
 # This script is used to populate the Azure Ansible inventory.yml with 
 # the results of "terraform output"

HyperV/bootstrap.sh

@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
 # Override existing DNS Settings using netplan, but don't do it for Terraform builds
 if ! curl -s 169.254.169.254 --connect-timeout 2 >/dev/null; then

Vagrant/bootstrap.sh

@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
 # Override existing DNS Settings using netplan, but don't do it for Terraform builds
 if ! curl -s 169.254.169.254 --connect-timeout 2 >/dev/null; then

Vagrant/post_build_checks.sh

@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
 # This script is meant to verify that DetectionLab was built successfully.
 # Only MacOS and Linux are supported. Use post_build_checks.ps1 for Windows.

Vagrant/prepare.sh

@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
 # This script is meant to verify that your system is configured to 
 # build DetectionLab successfully.

Vagrant/scripts/install-botsv2.sh

@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
     # Thanks to @MHaggis for this addition!
     # It is recommended to only uncomment the attack-only dataset comment block.

Vagrant/scripts/install-botsv3.sh

@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
 #Thanks to @MHaggis for this addition!
 #More information on BOTSv3 can be found at https://github.com/splunk/botsv3

ci/build_machine_bootstrap.sh

@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
 # This script is run on the Packet.net baremetal server for CI tests.
 # While building, the server will start a webserver on Port 80 that contains
@@ -112,7 +112,7 @@ fi
 
 # Recreate a barebones version of the build script so we have some sense of return codes
 cat << 'EOF' > /opt/DetectionLab/build.sh
-#! /bin/bash
+#! /usr/bin/env bash
 
 # Brings up a single host using Vagrant
 vagrant_up_host() {

ci/manual_machine_bootstrap.sh

@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
 # This script is used to manually prepare an Ubuntu 16.04 server for DetectionLab building
 export DEBIAN_FRONTEND=noninteractive

ci/manual_machine_bootstrap_vmware.sh

@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
 # This script is used to manually prepare an Ubuntu 16.04 server for DetectionLab building