👷 Fix release backend and CI call to helper

.travis.yml

@@ -15,7 +15,8 @@ before_script:
   - env | sort
 
 script:
-  - manager.sh run
+  - ls -l
+  - ./manager.sh run
 
 after_script:
   - docker images

manage.sh

@@ -41,7 +41,7 @@ function release_image {
 
     cd ../backend
     rm -rf ./dist
-    ./scripts/dist
+    ./scripts/dist.sh
     echo "Backend release generated in $(pwd)/dist"
 
     cd ..