diff --git a/.github/lint-scripts.sh b/.github/lint-scripts.sh
index 21fe3ba..d2c824a 100755
--- a/.github/lint-scripts.sh
+++ b/.github/lint-scripts.sh
@@ -14,5 +14,3 @@ while read -r FILE; do
   echo lint "${FILE}"
   shellcheck -x "${FILE}"
 done < "${TMP_FILE}"
-
-rm "${TMP_FILE}"
diff --git a/.github/tests.sh b/.github/tests.sh
new file mode 100755
index 0000000..31ab777
--- /dev/null
+++ b/.github/tests.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+#
+# run zammad tests
+#
+
+set -o errexit
+
+until (curl -I --silent --fail localhost | grep -iq zammad_session); do
+    echo "wait for zammad to be ready..."
+    sleep 15
+done
+
+docker exec -i zammad-docker-compose_zammad-railsserver_1 bash <<'EOF'
+set -o errexit
+bundle exec rubocop
+# rake db:migrate
+# rake db:seed
+bundle exec rspec -t ~type:system -t ~searchindex
+bundle exec rake db:environment:set RAILS_ENV=test
+rake db:reset
+rake test:units
+ruby -I test/ test/integration/object_manager_test.rb
+ruby -I test/ test/integration/package_test.rb
+EOF
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 8b89ac7..136a129 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -25,3 +25,5 @@ jobs:
         run: docker-compose pull
       - name: install
         run: docker-compose up -d
+      - name: tests
+        run: .github/tests.sh