Squashed commit of the following:
commit 7aa576c725374a1c3c84945b9c9e1de879c049f3
Author: Marius Wöste <mar.w@wwu.de>
Date: Mon Apr 8 15:26:35 2019 +0200
Replace tag with short SHA
commit 49acb06c29867eb5297edca66587a66af7b4bd9d
Author: Marius Wöste <mar.w@wwu.de>
Date: Mon Apr 8 15:24:39 2019 +0200
Replace git call with .gitlab-ci env variable
commit 190da500951b8e74876ee95b4b0f3ec44382bb0a
Author: Marius Wöste <mar.w@wwu.de>
Date: Mon Apr 8 15:19:11 2019 +0200
Fix .gitlab-ci.yml syntax
commit 203c66097c1f5f7862eafe20285b6cdc5222f9d9
Author: Marius Wöste <mar.w@wwu.de>
Date: Mon Apr 8 15:15:42 2019 +0200
Add .gitlab-ci
