diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 18c0cb2..bb98f0f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,61 +1,8 @@
-.intstall-rkorapclient:
-  variables:
-    # Set `CCACHE_BASEDIR` and `CCACHE_DIR` to point `ccache` towards the cached
-    # path on the gitlab-runner. This enables to cache the output of `ccache`
-    # between various runs.
-    CCACHE_BASEDIR: ${CI_PROJECT_DIR}
-    CCACHE_DIR: ${CI_PROJECT_DIR}/ccache
-    # Set `ccache` to `content` to prevent rebuilding of the CI/CD containers to
-    # trigger a recreate of the cache. By using `content` the compiler's `mtime`
-    # is not considered as part of the hash.
-    CCACHE_COMPILERCHECK: "content"
-    # Enable caching for `apt-get`.
-    APT_CACHE_DIR: ${CI_PROJECT_DIR}/apt-cache
-    # Export `noninteractive` frontend to prevent requesting user input
-    DEBIAN_FRONTEND: noninteractive
-    R_LIBS_USER: ${CI_PROJECT_DIR}/rlib
-
-  cache:
-    key: rkorapclient
-    paths:
-      - apt-cache/
-      - ccache/
-      - rlib/
-
-  before_script:
-    - source `find .. -name section_helper.sh`
-
-    - start_section install_linux_packages "Installing missing Linux packages"
-    - mkdir -pv $APT_CACHE_DIR ccache $R_LIBS_USER /usr/local/sbin ~/.ccache ~/.R
-    - cp ci/Makevars ~/.R/Makevars
-    - cp ci/ccache.conf ${CI_PROJECT_DIR}/ccache/ccache.conf
-    - cp ci/ccache.conf ~/.ccache/ccache.conf
-    - echo "R_LIBS='$R_LIBS_USER'" > .Renviron
-    - echo "MAKEFLAGS=-j$(nproc)" >> ~/.R/Makevars
-    - echo "MAKE=make -j$(nproc)" >> ~/.R/Makevars
-    - apt-get update
-    - apt-get install -y -o dir::cache::archives="$APT_CACHE_DIR" --no-install-recommends software-properties-common dirmngr ccache wget
-    - wget -qO- https://cloud.r-project.org/bin/linux/ubuntu/marutter_pubkey.asc | tee -a /etc/apt/trusted.gpg.d/cran_ubuntu_key.asc
-    - add-apt-repository "deb https://cloud.r-project.org/bin/linux/ubuntu $(lsb_release -cs)-cran40/"
-     # - add-apt-repository ppa:c2d4u.team/c2d4u4.0+
-    - grep "sudo apt install" Readme.md | sed -e 's/.*sudo apt install/apt-get install --no-install-recommends -o dir::cache::archives="$APT_CACHE_DIR" -y /g' | sh
-    - ln -s $(which ccache) /usr/local/sbin/gcc
-    - ln -s $(which ccache) /usr/local/sbin/g++
-    - end_section install_linux_packages
-
-  script:
-    - start_section installing "Installing RKorAPClient from CRAN"
-    - export PATH=/usr/local/sbin:$PATH
-    - R -q -e "install.packages(c('remotes', 'RKorAPClient'), dependencies = TRUE)"
-    - R -q -e "update.packages(ask = FALSE)"
-    - end_section installing
-    - start_section linstalling "Installing RKorAPClient from source"
-    - R -q -e 'remotes::install_local(force = TRUE, dependencies = TRUE)'
-    - ccache -s
-    - end_section linstalling
+include:
+  - local: './ci/install-rkorapclient-ci.yml'
 
 build-rkorapclient-on-stable:
-  extends: .intstall-rkorapclient
+  extends: .install-rkorapclient
   image: ubuntu:latest
   cache:
     key: rkorapclient-ubuntu-stable
@@ -64,8 +11,6 @@
     - ccache/
     - rlib/
 
-
 build-rkorapclient-on-rolling:
-  extends: .intstall-rkorapclient
+  extends: .install-rkorapclient
   image: ubuntu:rolling
-