Add environment variable handling for CI builds in internal_frontend

internal_frontend/.gitlab-ci.yml

@@ -10,6 +10,15 @@ build_internal_frontend:
   script:
     - |
       cd internal_frontend
+      echo "KEYCLOAK_ISSUER=$KEYCLOAK_ISSUER" > .env
+      echo "NEXTAUTH_SECRET=$NEXTAUTH_SECRET" >> .env
+      if [ "$CI_COMMIT_REF_NAME" = "production" ]; then
+        echo "KEYCLOAK_CLIENT_ID=$KEYCLOAK_CLIENT_ID_PROD" >> .env
+        echo "KEYCLOAK_CLIENT_SECRET=$KEYCLOAK_CLIENT_SECRET_PROD" >> .env
+      else
+        echo "KEYCLOAK_CLIENT_ID=$KEYCLOAK_CLIENT_ID_TEST" >> .env
+        echo "KEYCLOAK_CLIENT_SECRET=$KEYCLOAK_CLIENT_SECRET_TEST" >> .env
+      fi
       npm install
       npx next build
   artifacts: