adding jar generation command in readme.md

Author: Ashish Mishra

.DS_Store

@@ -1,10 +1,9 @@
 HELP.md
 
-target/*
+target/
 !.mvn/wrapper/maven-wrapper.jar
 !**/src/main/**/target/
 !**/src/test/**/target/
-!target/*jar
 
 ### STS ###
 .apt_generated

.gitignore

@@ -37,7 +37,9 @@ project-root/
 ```sh
 git clone https://github.com/beneite/SpringBootBasics.git
 cd SpringWithDocker
+mvn clean package -DskipTests
 ```
+> Running ```mvn clean package -DskipTests``` will create a SpringWithDocker-0.0.1-SNAPSHOT.jar file in target folder.
 
 ### 2️⃣ Build and Run Containers