diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..eb8c6b7
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,99 @@
+stages:
+  - deploy
+
+variables:
+  BASE_DIRS: "src public api partials tools"
+  CONFIG_BASE_DIR: "config"
+  LOCAL_ROOT: "/mnt/nexusserver"
+  # SITE_DOMAIN_DIR wurde entfernt
+
+default:
+  image: alpine:3.20
+
+.deploy_local_template:
+  stage: deploy
+  before_script:
+    - apk add --no-cache rsync bash coreutils
+    - echo "CI Workspace:" && pwd && ls -la
+  script:
+    - |
+      set -e
+      
+      echo "Deploy ENV: ${DEPLOY_ENV}"
+      echo "Target path: ${TARGET_PATH}"
+
+      # =========================================================
+      # DEBUG: Check mount points
+      # =========================================================
+      echo "=== DEBUG: nexusserver visibility ==="
+      ls -la /mnt || true
+      ls -la /mnt/nexusserver || true
+      df -h /mnt/nexusserver || true
+      
+      # --- Ensure target exists ---
+      echo "🧱 Stelle sicher, dass Zielpfad existiert..."
+      mkdir -p "${TARGET_PATH}"
+
+      echo "🚀 Deploy ${DEPLOY_ENV} → ${TARGET_PATH}"
+
+      # --- Sync base dirs ---
+      for d in $BASE_DIRS; do
+        if [ -d "$d" ]; then
+          echo "🔁 Sync ${d}/ → ${TARGET_PATH}${d}/"
+          mkdir -p "${TARGET_PATH}${d}/"
+          rsync -a --delete --exclude=".gitkeep" "${d}/" "${TARGET_PATH}${d}/"
+        else
+          echo "⚠️ Verzeichnis $d existiert nicht im Repo, überspringe Sync."
+        fi
+      done
+
+      # --- Build mixed config ---
+      echo "🧩 Baue gemischtes Config-Verzeichnis (config/*.php + ${CONFIG_ENV_DIR})..."
+      rm -rf .ci_config_deploy
+      mkdir -p .ci_config_deploy
+      
+      if [ -d "${CONFIG_BASE_DIR}" ]; then
+        # Kopiere Basis-PHP-Dateien falls vorhanden
+        find "${CONFIG_BASE_DIR}" -maxdepth 1 -name "*.php" -exec cp {} .ci_config_deploy/ \;
+      fi
+
+      if [ -d "${CONFIG_ENV_DIR}" ]; then
+        echo "➕ Env-Config aus ${CONFIG_ENV_DIR}/"
+        cp -R "${CONFIG_ENV_DIR}/." .ci_config_deploy/
+      fi
+
+      echo "🔁 Sync .ci_config_deploy/ → ${TARGET_PATH}${CONFIG_BASE_DIR}/"
+      mkdir -p "${TARGET_PATH}${CONFIG_BASE_DIR}/"
+      rsync -a --delete --exclude=".gitkeep" ".ci_config_deploy/" "${TARGET_PATH}${CONFIG_BASE_DIR}/"
+
+      # =========================================================
+      # DEBUG: Verifikation
+      # =========================================================
+      echo "=== DEBUG: post-sync spot checks ==="
+      ls -la "${TARGET_PATH}" | head -n 50 || true
+      echo "✅ Deploy ${DEPLOY_ENV} abgeschlossen."
+
+deploy:staging:
+  extends: .deploy_local_template
+  variables:
+    DEPLOY_ENV: "staging"
+    CONFIG_ENV_DIR: "config/staging"
+    TARGET_PATH: "${LOCAL_ROOT}/nexus/staging/"
+  environment:
+    name: staging
+    # url: https://staging.deine-domain.de  # Hier ggf. manuell anpassen
+  only:
+    - develop
+    - merge_requests
+
+deploy:production:
+  extends: .deploy_local_template
+  variables:
+    DEPLOY_ENV: "production"
+    CONFIG_ENV_DIR: "config/prod"
+    TARGET_PATH: "${LOCAL_ROOT}/nexus/live/"
+  environment:
+    name: production
+  only:
+    - main
+  # when: manual
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