diff --git a/doc/contributing/getting_started.rst b/doc/contributing/getting_started.rst
index 5aa581b8e..78678588c 100644
--- a/doc/contributing/getting_started.rst
+++ b/doc/contributing/getting_started.rst
@@ -21,10 +21,11 @@ in order to be able to log in from the frontend:
 
 ..  sourcecode:: bash
 
-  $ docker exec modoboa-api '/bin/sh -c python3 /code/test_project/python manage.py createapplication --name frontend --client-id "LVQbfIIX3khWR3nDvix1u9yEGHZUxcx53bhJ7FlD" --user 1 --algorithm RS256 --redirect-uris 'https://localhost:3000/login/logged' public authorization-code'
+  $ docker exec modoboa-api '/bin/sh -c python3 /code/test_project/manage.py createapplication --name frontend --client-id "LVQbfIIX3khWR3nDvix1u9yEGHZUxcx53bhJ7FlD" --user 1 --algorithm RS256 --redirect-uris 'https://localhost:3000/login/logged' public authorization-code'
+  $ docker exec modoboa-api '/bin/sh -c python3 /code/test_project/manage.py createapplication --name Dovecot --skip-authorization --client-id=dovecot --client-secret=Toto12345 confidential client-credentials'
 
 It will start the docker environment and make a Modoboa instance
-available at ``http://localhost:8000`` and the new admin interface at ``http://localhost:8080``
+available at ``https://localhost:8000`` and the new admin interface at ``https://localhost:3000``.
 
 If you don't want to use docker or need a more complex development
 setup, go to the next section.
diff --git a/docker-compose.yml b/docker-compose.yml
index 4a6186688..d26b288c5 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -42,6 +42,27 @@ services:
     volumes:
       - .:/code
 
+  api-unsecured:
+    container_name: modoboa_api_unsecured
+    restart: unless-stopped
+    build:
+      context: .
+      dockerfile: docker/Dockerfile.dev
+    ports:
+      - 8001:8001
+    env_file:
+      - test_project/oidc_key
+    environment:
+      PYTHONPATH: ".."
+      DB: "SQLITE"
+      DEBUG: "True"
+      REDIS_HOST: redis
+    command: >
+      sh -c "cd test_project
+             python3 manage.py runserver_plus 0.0.0.0:8001"
+    volumes:
+      - .:/code
+
   front:
     container_name: modoboa_front
     restart: unless-stopped
diff --git a/docker/dovecot_config/dovecot-oauth2.conf.ext b/docker/dovecot_config/dovecot-oauth2.conf.ext
index 2e5899f04..de339a10b 100644
--- a/docker/dovecot_config/dovecot-oauth2.conf.ext
+++ b/docker/dovecot_config/dovecot-oauth2.conf.ext
@@ -1,5 +1,5 @@
 introspection_mode = post
-introspection_url = http://b1r8hUce03fA3OK260MQBgvi96dsnXvdmSDCVoLJ:dX8ZxICUPCVSoOJiyNAWIozf58IjmlUNQ6PPbX8rqD90QAw0te8052PKI82IRzmeCxv1kvHjSFpCOPqwteiFDj3TBq1cxmrn0Do2AlyDWVD1p8lUeiloERNEcj1InXaR@api:8000/api/o/introspect/
+introspection_url = http://dovecot:Toto12345@api-unsecured:8001/api/o/introspect/
 username_attribute = username
 tls_ca_cert_file = /etc/ssl/certs/ca-certificates.crt
 active_attribute = active
diff --git a/test_project/test_project/settings.py b/test_project/test_project/settings.py
index 5795fd09e..cb1a64f01 100644
--- a/test_project/test_project/settings.py
+++ b/test_project/test_project/settings.py
@@ -29,6 +29,7 @@ DEBUG = "DEBUG" in os.environ
 
 ALLOWED_HOSTS = [
     "api",
+    "api-unsecured",
     "127.0.0.1",
     "localhost",
 ]