[!3] First attempt of a gitlab ci setup

Merge branch 'feature/ci-setup' into 'master'

ref:spack/dune-spack\> This fixes [#1]

See merge request [spack/dune-spack!3]

  [#1]: gitlab.dune-project.org/NoneNone/issues/1
  [spack/dune-spack!3]: gitlab.dune-project.org/spack/dune-spack/merge_requests/3


Closes #1

.gitlab-ci.yml

@@ -0,0 +1,14 @@
+---
+
+before_script:
+  - git clone -b v$SPACK_VERSION https://github.com/spack/spack.git
+  - . ./spack/share/spack/setup_env.sh
+  - spack repo add .
+
+image: registry.dune-project.org/docker/ci/debian:10
+
+spectest:v0.14.2:
+  variables:
+    - SPACK_VERSION : "0.14.2"
+  script:
+    - spack spec dune