Topic/1226 database helpers library migration

coscine/issues#1226
coscine/issues#407

.gitlab-ci.yml

+include:
+  - project: coscine/tools/gitlab-ci-templates
+    file: 
+      - /dotnet.yml
+
 stages:
+  - build
   - test
-  - release
-  - releasetrigger
-
-cake:Test:
-  stage: test
-  script:
-    - PowerShell .\build.ps1 -Target Test -Configuration Debug
-  variables:
-    GIT_STRATEGY: clone
-  artifacts:
-    reports:
-      junit: "./Artifacts/TestResults.xml"
-    paths:
-      - "./Artifacts/*"
-  except:
-    - master
-    - tags
-
-cake:Release:
-  stage: release
-  script:
-    - PowerShell .\build.ps1 -Target Release -Configuration Release --nugetApiKey="${NUGET_API_KEY}"
-  variables:
-    GIT_STRATEGY: clone
-  dependencies:
-    - cake:Test
-  artifacts:
-    paths:
-      - "./Artifacts/*"
-  only:
-    - tags
-
-cake:Prerelease:
-  stage: release
-  script:
-    - PowerShell .\build.ps1 -Target Prerelease -Configuration Release
-  variables:
-    GIT_STRATEGY: clone
-  dependencies:
-    - cake:Test
-  artifacts:
-    paths:
-      - "./Artifacts/*"
-  except:
-    - tags
-    - master
-
-cake:GitlabRelease:
-    stage: releasetrigger
-    script:
-      - PowerShell .\build.ps1 -Target GitlabRelease --GitlabProjectPath="${CI_PROJECT_PATH}" --gitlabProjectId="${CI_PROJECT_ID}" --gitlabToken="${GITLAB_TOKEN}"
-    only:
-      - master
\ No newline at end of file
+  - publish
+
+variables:
+  DOTNET_MAIN_PROJECT_FOLDER: Database.Helpers
+
+build-branch:
+  extends: .build-branch
+
+build-nuget-release:
+  extends: .build-nuget-release
+
+test:
+  extends: .test
+
+publish-branch-prerelease:
+  extends: .publish-branch-prerelease
+
+publish-gitlab-release:
+  extends: .publish-gitlab-release
+
+publish-master-release:
+  extends: .publish-master-release
+
+publish-nuget-release:
+  extends: .publish-nuget-release