CI: Test pypi build

.gitlab-ci.yml

@@ -175,6 +175,19 @@ test:3.7:
   <<: *test_template
 
 
+test:build-pypi-dist:
+  stage: test
+  image: pauldmccarthy/fsleyes-py35-wxpy4-gtk2
+  <<: *except_releases
+
+  tags:
+    - docker
+
+  script:
+   - source /test.venv/bin/activate
+   - bash ./.ci/build_pypi_dist.sh
+
+
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