♻️(dev) refacto tilt stack

To be able to move the repository on the new organization and to
facilitate external developer integration we need to create a standalone
dev stack and use external secret.

scripts/install-pre-commit-hook.sh

@@ -1,10 +1,10 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 mkdir -p "$(dirname -- "${BASH_SOURCE[0]}")/../.git/hooks/"
 PRE_COMMIT_FILE="$(dirname -- "${BASH_SOURCE[0]}")/../.git/hooks/pre-commit"
 
 cat <<'EOF' >$PRE_COMMIT_FILE
-#!/bin/bash
+#!/usr/bin/env bash
 
 # directories containing potential secrets
 DIRS="."