updated logic of the test-job

• updated the test stage in the app Dockerfile

app/Dockerfile

@@ -5,10 +5,6 @@ ARG NODEJS_VERSION='16.17.0'
 
 FROM node:$NODEJS_VERSION-alpine AS base
 
-ARG \
-    MONGODB_URL_TEST=mongodb://host.docker.internal:27017/todo-app \
-    JWT_SECRET_TEST=<my-very-secret-jwt>
-
 ENV \
     PORT=<dynamically-set-from-k8s> \
     MONGODB_URL=<dynamically-set-from-k8s> \
@@ -37,8 +33,8 @@ COPY ./server/package*.json ./
 RUN npm ci --no-audit --no-fund
 
 ARG \
-    MONGODB_URL_TEST \
-    JWT_SECRET_TEST
+    MONGODB_URL_TEST=mongodb://host.docker.internal:27017/todo-app \
+    JWT_SECRET_TEST=<my-very-secret-jwt>
 
 # MONGODB_URL and JWT_SECRET are available as env variables
 RUN MONGODB_URL=$MONGODB_URL_TEST JWT_SECRET=$JWT_SECRET_TEST npm run test