modified makefile to produce same home dir in sudo mode

Makefile

@@ -24,12 +24,26 @@ RESET    = "\e[0m"
 
 COMPOSE            = ./srcs/docker-compose.yml
 
+# in makefile you can use an env variable directly as a make variable :
+#  -> https://ftp.gnu.org/old-gnu/Manuals/make-3.79.1/html_chapter/make_6.html#SEC68
+# so if you want to get the home directory you can use $(HOME)
+# however, this will not give the same result if you run make in sudo, ex :
+#  make      : /home/asususus
+#  sudo make : /root
+# but you can use this command `eval echo "~$SUDO_USER"` to get
+# the home directory of the user using sudo, it works in non-sudo also :
+# - $SUDO_USER :
+#   - in normal mode its value is ""
+#   - in sudo mode its value is the user (same as $USER in normal mode)
+# - ~$SUDO_USER :
+#   - in linux "~USER" print the home directory of a user
+USER_HOME        := $(shell echo ~$$SUDO_USER)
 # extract env variables in .env file
 # then expend the home path
 # then expend the pwd path
 # and finally remove the leading "EXPEND_" word
 EXPENDED_ENV_VAR := $(shell grep "^#EXPEND_" ./srcs/.env)
-EXPENDED_ENV_VAR := $(subst $$HOME_PATH,$(HOME),$(EXPENDED_ENV_VAR))
+EXPENDED_ENV_VAR := $(subst $$HOME_PATH,$(USER_HOME),$(EXPENDED_ENV_VAR))
 EXPENDED_ENV_VAR := $(subst $$PWD_PATH,$(shell pwd),$(EXPENDED_ENV_VAR))
 EXPENDED_ENV_VAR := $(EXPENDED_ENV_VAR:#EXPEND_%=%)