some explanations in create_env

srcs/model.env

@@ -31,6 +31,32 @@ WP_USER_EMAIL=moehu36@42.fr
 
 EXECUTION_TIME=300
 
+# if you want to get the home directory you can use $(HOME)
+# however, this will not give the same result if you use sudo, ex :
+#  ./create_env      : /home/asususus
+#  sudo ./create_env : /root
+# but you can use this command `eval echo "~$SUDO_USER"` to get
+# the home directory of the user using sudo, it works in non-sudo also :
+# - echo "$SUDO_USER" :
+#   - in normal mode it outputs : ""
+#   - in sudo mode it outputs the user : "username"
+#     - same as $USER in normal mode
+# - echo "~$SUDO_USER" :
+#   - in linux "~USER" is the home directory of a user
+#   - but echo "something" will treat ~ as a string litteral
+#   - so the output in mormal mode will be : "~"
+#   - and in sudo mode it will be : "~username"
+# - eval echo "~$SUDO_USER" :
+#   - eval will evaluate the expression and perform expansion one more time
+#   - so it will evaluate the output of `echo "~$SUDO_USER"`
+#   - in normal mode :
+#     - it will evaluate : "~"
+#     - and ouptput      : "/home/username"
+#   - in sudo mode :
+#     - it will evaluate : "~username"
+#     - and output       : "/home/username"
+#     - because "~username" expand in the home (~) directory of given user
+# https://stackoverflow.com/questions/77088135/makefile-subst-doesnt-use-make-variable-as-expected
 HOME_PATH=$(eval echo "~$SUDO_USER")
 
 HOST_VOLUME_WP=${HOME_PATH}/data/lejourduprof/wp_volume