gitlab-ci: Add build stage

Signed-off-by: Vasilis Tsiligiannis <acinonyx@openwrt.gr>

.gitlab-ci.yml

@@ -1,5 +1,6 @@
 stages:
   - static
+  - build
   - test
   - deploy
   - trigger
@@ -17,6 +18,28 @@ static_python:
     - pip install --no-cache-dir --no-deps -r requirements-dev.txt
     - cp env-dist .env
     - flake8 .
+build:
+  stage: build
+  image: python:2.7
+  script:
+    - rm -rf dist
+    - python setup.py sdist bdist_wheel
+  artifacts:
+    expire_in: 1 week
+    when: always
+    paths:
+      - dist
+build3:
+  stage: build
+  image: python:3.6
+  script:
+    - rm -rf dist
+    - python setup.py sdist bdist_wheel
+  artifacts:
+    expire_in: 1 week
+    when: always
+    paths:
+      - dist
 test:
   stage: test
   image: python:2.7