Update .gitlab-ci.yml file

.gitlab-ci.yml

 image: alash325/javaant:latest
 
 stages:
-	- build
-	- test
+ - build
+ - test
 
 build:
-	stage: build
+ stage: build
+
+ script:
+  - ant build
 
-	script:
-		- ant build
-		
 test:
-	stage: test
-	script: 
-		- ant -lib test/lib/junit.jar -Dtest=AllTests testall
-	artifacts: 
-		paths: 
-			- build/report/
+ stage: test
+ script: 
+  - ant -lib test/lib/junit.jar -Dtest=AllTests testall
+ artifacts: 
+  paths: 
+   - build/report/