Fix (justfile): Make Justfile MacOS compatible

Fixes #394

Author: hanthor

Justfile

@@ -15,7 +15,7 @@ default:
 # Check Just Syntax
 [group('Just')]
 check:
-    #!/usr/bin/bash
+    #!/usr/bin/env bash
     find . -type f -name "*.just" | while read -r file; do
     	echo "Checking syntax: $file"
     	just --unstable --fmt --check -f $file
@@ -26,7 +26,7 @@ check:
 # Fix Just Syntax
 [group('Just')]
 fix:
-    #!/usr/bin/bash
+    #!/usr/bin/env bash
     find . -type f -name "*.just" | while read -r file; do
     	echo "Checking syntax: $file"
     	just --unstable --fmt -f $file
@@ -37,7 +37,7 @@ fix:
 # Clean Repo
 [group('Utility')]
 clean:
-    #!/usr/bin/bash
+    #!/usr/bin/env bash
     set -eoux pipefail
     touch _build
     find *_build* -exec rm -rf {} \;
@@ -55,7 +55,7 @@ sudo-clean:
 [group('Utility')]
 [private]
 sudoif command *args:
-    #!/usr/bin/bash
+    #!/usr/bin/env bash
     function sudoif(){
         if [[ "${UID}" -eq 0 ]]; then
             "$@"
@@ -141,7 +141,7 @@ build $target_image=image_name $tag=default_tag $dx="0" $hwe="0" $gdx="0":
 # 4. If the image is not found, pull it from the remote repository into reootful podman.
 
 _rootful_load_image $target_image=image_name $tag=default_tag:
-    #!/usr/bin/bash
+    #!/usr/bin/env bash
     set -eoux pipefail
 
     # Check if already running as root or under sudo
@@ -251,7 +251,7 @@ rebuild-iso $target_image=("localhost/" + image_name) $tag=default_tag: && (_reb
 
 # Run a virtual machine with the specified image type and configuration
 _run-vm $target_image $tag $type $config:
-    #!/usr/bin/bash
+    #!/usr/bin/env bash
     set -eoux pipefail
 
     # Determine the image file based on the type