diff --git a/.github/workflows/mirror.yml.bak b/.github/workflows/mirror.yml.bak
new file mode 100644
index 000000000..e1b46580b
--- /dev/null
+++ b/.github/workflows/mirror.yml.bak
@@ -0,0 +1,20 @@
+name: Mirror GitLab Repository
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  mirror:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v3
+
+      - name: Push to GitLab
+        run: |
+          git remote add gitlab git@gitlab.com:ug4-project/ugcore.git
+          git push --mirror gitlab
+        env:
+          SSH_PRIVATE_KEY: ${{ secrets.GITLAB_SSH_PRIVATE_KEY }}
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 000000000..d5737ab72
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,99 @@
+# You can override the included template(s) by including variable overrides
+# SAST customization: https://docs.gitlab.com/ee/user/application_security/sast/#customizing-the-sast-settings
+# Secret Detection customization: https://docs.gitlab.com/ee/user/application_security/secret_detection/pipeline/#customization
+# Dependency Scanning customization: https://docs.gitlab.com/ee/user/application_security/dependency_scanning/#customizing-the-dependency-scanning-settings
+# Container Scanning customization: https://docs.gitlab.com/ee/user/application_security/container_scanning/#customizing-the-container-scanning-settings
+# Note that environment variables can be set in several places
+# See https://docs.gitlab.com/ee/ci/variables/#cicd-variable-precedence
+default:
+  tags:
+  - docker
+  - linux
+variables:
+  GIT_CLONE_PATH: "$CI_BUILDS_DIR/$CI_CONCURRENT_ID/$CI_PROJECT_DIR/$CI_PIPELINE_ID/ug4/ugcore"
+stages:
+- test
+- build
+- sync
+
+do-test:
+  stage: test
+  image: rigby132/ug4-test:latest
+  timeout: 4 hours
+  variables:
+    CMAKE_C_COMPILER: gcc
+    CMAKE_CXX_COMPILER: g++
+  script:
+  - cd ..
+  - cp --update=none -R /opt/ug4/. .
+  - mkdir -p build
+  - cd build
+  - cmake .. -DENABLE_ALL_PLUGINS=ON -DDEBUG=ON -GNinja
+  - ninja -j8
+  - cd ..
+  - cd apps/unit_tests/
+  - mkdir -p build
+  - cd build
+  - cmake .. -DUSE_JSON=OFF -DINTERNAL_BOOST=ON -DDEBUG=ON -GNinja
+  - ninja -j8
+  - cd ../../..
+  - pwd
+  - ls -a
+  - source ugcore/scripts/shell/ugbash
+  - echo $UG4_ROOT
+  - "./bin/testsuite --build-info=yes --log_level=all --log_format=JUNIT --log_sink=report.xml -- --name report"
+  - cat ug_test_numprocs_1.log
+  - mv ug_test_numprocs_1.log ugcore/test.log
+  - cat report.xml
+  - mv report.xml ugcore/report.xml
+  artifacts:
+    when: always
+    expire_in: 1 week
+    paths:
+    - report.xml
+    - test.log
+    reports:
+      junit: report.xml
+      
+build-clang:
+  stage: build
+  image: rigby132/ug4-minimal:latest
+  timeout: 4 hours
+  variables:
+    CMAKE_C_COMPILER: gcc
+    CMAKE_CXX_COMPILER: g++
+    CXX_FLAGS: "-O3 -fPIC"
+  before_script:
+  - docker info
+  - echo "$CI_REGISTRY"
+  - echo "$CI_JOB_TOKEN" | docker login $CI_REGISTRY -u $CI_REGISTRY_USER --password-stdin
+  script:
+  - cd ..
+  - cp --update=none -R /opt/ug4/. .
+  - mkdir -p build
+  - cd build
+  - cmake .. -DENABLE_ALL_PLUGINS=ON -DDEBUG=OFF -GNinja
+  - ninja -j8
+  - cd ..
+  - cd ..
+  - echo -e 'FROM ubuntu:latest\nENV DEBIAN_FRONTEND=noninteractive\nRUN apt-get update
+    && apt-get install -y python3 \nADD ug4 /opt/ug4' > Dockerfile
+  - docker build -t registry.gitlab.com/ug4-project/ugcore .
+  - docker push registry.gitlab.com/ug4-project/ugcore
+  - cd ug4
+  - ls -a bin
+  - mv bin ugcore/bin
+  artifacts:
+    when: on_success
+    expire_in: 1 week
+    paths:
+    - bin/*
+    - bin/plugins/*
+    
+include:
+- template: Jobs/SAST.gitlab-ci.yml
+- template: Security/SAST.gitlab-ci.yml
+- local: '/.gitlab/mirror-main.yml'
+
+sast:
+  stage: test
diff --git a/.gitlab/mirror-main.yml b/.gitlab/mirror-main.yml
new file mode 100644
index 000000000..1cfc42a68
--- /dev/null
+++ b/.gitlab/mirror-main.yml
@@ -0,0 +1,17 @@
+stages:
+  - sync
+
+sync_to_github:
+  stage: sync
+  image: alpine:latest
+  before_script:
+    - apk add --no-cache git
+    - git config --global user.name "UG4_BOT"
+    - git config --global user.email "ug4-bot@ug4.uni-frankfurt.de"
+  script:
+    - git clone --mirror https://oauth2:${CI_JOB_TOKEN}@gitlab.com/ug4-project/ugcore.git repo
+    - cd repo
+    - git remote add github https://${GITHUB_UG4BOT_NAME}:${GITHUB_UG4BOT_TOKEN}@github.com/UG4/ugcore.git
+    - git push --mirror github
+  only:
+    - main # Trigger on pushes to the main branch only