Try pointing to different host

.github/workflows/mysql.yaml

@@ -33,11 +33,6 @@ jobs:
           pip3 install invoke
           pip3 install mysqlclient
           invoke install
-      - name: Create Database
-        run: |
-          sudo /etc/init.d/mysql start
-          mysql -e 'CREATE_DATABASE inventree_test_db;' -uroot -proot
-          mysql -e 'SHOW DATABASES;' -uroot -proot
       - name: Run Tests
         run: |
           cd InvenTree

InvenTree/InvenTree/ci_mysql.py

@@ -14,6 +14,6 @@ if 'test' in sys.argv:
         'NAME': 'inventree_test_db',
         'USER': 'inventree',
         'PASSWORD': 'password',
-        'HOST': '127.0.0.1',
+        'HOST': 'mysql',
         'PORT': '3306',
     }