Update README.md

Author: ahemaid

README.md

@@ -22,9 +22,10 @@
 If you want to build and run locally, ensure that at least Java 11 is installed. Then, follow these steps:
 
 1.  Clone this repository.
-2.  Execute `cd IDS-AppStore`, `chmod +x mvnw` and `./mvnw clean package -DskipTests -Dmaven.javadoc.skip=true`.
-3.  Navigate to `/target` and run `java -jar ids-appstore-{VERSION}.jar`.
-4.  If everything worked fine, the application is available at https://localhost:8080/. The API can
+2.  Create the Data folder on the root `cd /` and `mkdir data`
+3.  Execute `cd IDS-AppStore`, `chmod +x mvnw` and `./mvnw clean package -DskipTests -Dmaven.javadoc.skip=true`.
+5.  Navigate to `/target` and run `java -jar ids-appstore-{VERSION}.jar`.
+6.  If everything worked fine, the application is available at https://localhost:8080/. The API can
     be accessed at https://localhost:8080/api. The Swagger UI can be found at https://localhost:8080/api/docs.