Switch to gitlab-ci

.gitlab-ci.yml

+image: "archlinux:latest"
+
+
+test:
+  script:
+    - pacman -Syu --needed --noconfirm docker make
+    - systemctl start docker
+    - make test-coverage
+  tags:
+    - vm

.travis.yml

-sudo: required
-
-language: bash
-
-services:
-  - docker
-
-script:
-  - make test