Allow git-secret to run from any directory in the work tree

src/_utils/_git_secret_tools.sh

@@ -142,6 +142,12 @@ function _add_ignored_file {
 }
 
 
+function _is_inside_git_tree {
+    git rev-parse --is-inside-work-tree >/dev/null 2>&1
+    echo $?
+}
+
+
 # Logic :
 
 function _abort {

src/main.sh

@@ -4,7 +4,9 @@ set -e
 
 function _check_setup {
   # Checking git and secret-plugin setup:
-  if [[ ! -d ".git" ]] || [[ ! -d ".git/hooks" ]]; then
+  local is_tree
+  is_tree=$(_is_inside_git_tree)
+  if [[ $is_tree != "0" ]]; then
     _abort "repository is broken. try running 'git init' or 'git clone'."
   fi