Add environment variables for MongoDB credentials in CI workflow

Author: karimzakzouk

.github/workflows/ci.yml

@@ -8,6 +8,11 @@ on:
         description: "Test execution result"
         value: ${{ jobs.code-coverage.outputs.result }}
 
+env:
+  MONGO_URI: ${{ secrets.MONGO_URI }}
+  MONGO_USERNAME: ${{ secrets.MONGO_USERNAME }}
+  MONGO_PASSWORD: ${{ secrets.MONGO_PASSWORD }}
+
 jobs:
   unit-testing:
     name: Unit Testing