servlet: modifies jar creation command (removes index.html)

data-access/servlet/Makefile

@@ -51,11 +51,9 @@ uninstall:
 
 .PHONY: war
 war:
-	@jar -cf target/$(WEBAPP_WAR) -C $(INSTALL_DIR) index.html\
-			  $(INSTALL_DIR)/META-INF/*.xml \
-			  $(INSTALL_DIR)/WEB-INF/*.xml \
-			  $(INSTALL_DIR)/WEB-INF/classes/* \
-			  $(INSTALL_DIR)/WEB-INF/lib/*.jar
+	cd $(INSTALL_DIR) \
+	&& jar -cf ../$(WEBAPP_WAR) META-INF WEB-INF WEB-INF/classes WEB-INF/lib \
+	&& cd -
 
 .PHONY:
 create-war: clean build install war