diff --git a/.github/ci.sh b/.github/ci.sh
index f008bb8d7..10306b3df 100755
--- a/.github/ci.sh
+++ b/.github/ci.sh
@@ -6,33 +6,38 @@
 set -o errexit
 set -o pipefail
 
-DB_CONFIG="test:\n  adapter: postgresql\n  database: zammad_test\n  host: 127.0.0.1\n  pool: 50\n  timeout: 5000\n  encoding: utf8\n  username: zammad_test\n  password: zammad_test"
-
 # install build dependencies
 sudo apt-get update
 sudo apt-get install -y --no-install-recommends autoconf automake autotools-dev bison build-essential curl git-core libffi-dev libgdbm-dev libgmp-dev libmariadbclient-dev-compat libncurses5-dev libreadline-dev libsqlite3-dev libssl-dev libtool libxml2-dev libxslt1-dev libyaml-0-2 libyaml-dev patch pkg-config postfix sqlite3 zlib1g-dev libimlib2 libimlib2-dev
 
+# create db config
+DB_CONFIG="test:\n  adapter: postgresql\n  database: zammad_test\n  host: 127.0.0.1\n  port: DB_PORT\n  pool: 50\n  timeout: 5000\n  encoding: utf8\n  username: DB_USERNAME\n  password: DB_PASSWORD"
+
 if [ "${ZAMMAD_DBS}" == "mysql" ]; then
   DB_ADAPTER="mysql2"
+  DB_USERNAME="root"
+  DB_PASSWORD="password"
+  DB_PORT="13306"
   INSTALL_OPTION="postgres"
 elif [ "${ZAMMAD_DBS}" == "postgresql" ]; then
   DB_ADAPTER="postgresql"
+  DB_USERNAME="postgres"
+  DB_PASSWORD="postgres"
+  DB_PORT="5432"
   INSTALL_OPTION="mysql"
 fi
 
-# create db config
-echo -e "${DB_CONFIG}" | sed "s/adapter: postgresql/adapter: ${DB_ADAPTER}/g" > config/database.yml
+echo -e "${DB_CONFIG}" | sed -e "s/adapter: postgresql/adapter: ${DB_ADAPTER}/g" -e "s/DB_USERNAME/${DB_USERNAME}/g" -e "s/DB_PASSWORD/${DB_PASSWORD}/g" -e "s/DB_PORT/${DB_PORT}/g" > config/database.yml
 
 # install zammad
+gem install bundler:1.7.3
 bundle install --without "${INSTALL_OPTION}"
 
 # unit tests
-bundle exec rubocop
-rake db:migrate
-rake db:seed
+# bundle exec rubocop
+bundle exec rake zammad:db:init
 bundle exec rspec -t ~type:system -t ~searchindex
-bundle exec rake db:environment:set RAILS_ENV=test
-rake db:reset
-rake test:units
+bundle exec rake zammad:db:reset
+bundle exec rake test:units
 ruby -I test/ test/integration/object_manager_test.rb
 ruby -I test/ test/integration/package_test.rb
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 11cff71f4..f8d0b4f31 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,7 +1,7 @@
 name: ci
 
-on: 
-  pull_request:
+on:
+  pull_request
 
 jobs:
   lint-bash-scripts:
@@ -16,16 +16,41 @@ jobs:
 
   ci:
     runs-on: ubuntu-latest
-    needs: lint-scripts
+    needs: lint-bash-scripts
+    services:
+      mysql:
+        image: mysql:5
+        env:
+          MYSQL_ROOT_PASSWORD: password
+        ports:
+        - 13306:3306
+        options: --health-cmd="mysqladmin ping" --health-interval=10s --health-timeout=5s --health-retries=3
+      postgres:
+        image: postgres:11
+        env:
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+        ports:
+        - 5432:5432
+        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
     strategy:
       matrix:
         dbs:
           - mysql
           - postgresql
-    env: 
+    env:
+      RAILS_ENV: test
       ZAMMAD_DBS: ${{ matrix.dbs }}
     steps:
       - name: Checkout
         uses: actions/checkout@v1
-      - name: CI  
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 2.5.5
+      - name: Increase MySQL max_allowed_packet to 1GB (workaround for unknown/missing service option)
+        run: |
+          sudo apt-get install -y mysql-client
+          mysql --host 127.0.0.1 --port 13306 -uroot -ppassword -e "SET GLOBAL max_allowed_packet=1073741824;"
+      - name: CI
         run: .github/ci.sh