Update pipeline (x2)

Co-authored-by: shadad00 <shadad@itba.edu.ar>
Co-authored-by: bsquillari <bsquillari@itba.edu.ar>

.gitlab-ci.yml

@@ -140,6 +140,15 @@ build-subscription-api:
     - export TEST_IMAGE=${SUBSCRIPTION_TEST_IMAGE_NAME}
     - *build-and-push-script
 
+build-gateway:
+  extends:
+    - .build
+  script:
+    - export FOLDER=gateway
+    - export PROD_IMAGE=${GATEWAY_PROD_IMAGE_NAME}
+    - export TEST_IMAGE=${GATEWAY_TEST_IMAGE_NAME}
+    - *build-and-push-script
+
 build-browser-dev:
   extends:
     - .build