[ci-main.yml] Copy from template

See:
- https://gitlab.dune-project.org/joe/pacxx-docker/merge_requests/65
- https://gitlab.dune-project.org/joe/pacxx-docker/issues/21

ci-main.yml

@@ -54,15 +54,10 @@ source-pacxx:
 source-samples:
   stage: source
   image: registry.dune-project.org/joe/pacxx-docker:base-native.master
-  variables:
-    GIT_STRATEGY: none
   script:
-  - git clone --depth=1 -b "$CI_COMMIT_REF_NAME"
-      https://zivgitlab.uni-muenster.de/HPC2SE-Project/pacxx-samples.git samples ||
-    git clone --depth=1
-      https://zivgitlab.uni-muenster.de/HPC2SE-Project/pacxx-samples.git samples
-  - verbose-git-status samples pacxx-samples >>samples/repoversions
-  - find samples/ -name .git -prune -print0 | xargs -0 rm -rf
+  - getpacxx ${ADOPT:+--adopt="$ADOPT"} --branch="$CI_COMMIT_REF_NAME"
+             --versionlog=repoversions --samples
+  - mv repoversions samples/repoversions
   - cat samples/repoversions
   tags:
   - hpc2seci