diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 43fa826..757f660 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -14,8 +14,7 @@ repos:
       - id: check-merge-conflict
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.1.13
+    rev: v0.1.15
     hooks:
       - id: ruff
         args: [--fix]
-      - id: ruff-format
diff --git a/Dockerfile b/Dockerfile
index 6401033..350acd2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ FROM python:slim
 WORKDIR /app
 
 # Add metadata to the image to describe that the container is listening on port 80
-EXPOSE 80
+EXPOSE 8000
 
 # Copy the current directory contents into the container at /app
 COPY . /app
@@ -19,4 +19,4 @@ RUN apt-get update && apt-get install -y gcc curl && \
     poetry install --no-dev
 
 # Run server.py when the container launches
-CMD granian --no-ws --host 0.0.0.0 --port 80 --interface asgi main:app
+CMD python server.py
diff --git a/pyproject.toml b/pyproject.toml
index 1af9476..33420bc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,7 @@
+
 [tool.poetry]
 name = "discoursio-notifier"
-version = "0.2.22"
+version = "0.3.0"
 description = "notifier server for discours.io"
 authors = ["discours.io devteam"]
 
@@ -15,19 +16,24 @@ sentry-sdk = "^1.39.2"
 aiohttp = "^3.9.1"
 pre-commit = "^3.6.0"
 granian = "^1.0.1"
+discoursio-core = { git = "https://dev.discours.io/discours.io/core.git", branch = "feature/core" }
 
 [tool.poetry.group.dev.dependencies]
 setuptools = "^69.0.2"
 pyright = "^1.1.341"
 pytest = "^7.4.2"
 black = { version = "^23.12.0", python = ">=3.12" }
-ruff = { version = "^0.1.8", python = ">=3.12" }
+ruff = { version = "^0.1.15", python = ">=3.12" }
 isort = "^5.13.2"
 
 [build-system]
 requires = ["poetry-core"]
 build-backend = "poetry.core.masonry.api"
 
+[tool.setuptools.dynamic]
+version = {attr = "notifier.__version__"}
+readme = {file = "README.md"}
+
 [tool.ruff]
 line-length = 120
 extend-select = [
diff --git a/server.py b/server.py
new file mode 100644
index 0000000..1301ba5
--- /dev/null
+++ b/server.py
@@ -0,0 +1,17 @@
+from granian.constants import Interfaces
+from granian.server import Granian
+
+
+if __name__ == '__main__':
+    print('[server] started')
+
+    granian_instance = Granian(
+        'main:app',
+        address='0.0.0.0',  # noqa S104
+        port=8000,
+        workers=2,
+        threads=2,
+        websockets=False,
+        interface=Interfaces.ASGI,
+    )
+    granian_instance.serve()
diff --git a/services/auth.py b/services/auth.py
index b84a9bd..f26b37a 100644
--- a/services/auth.py
+++ b/services/auth.py
@@ -37,15 +37,24 @@ async def check_auth(req) -> str | None:
         try:
             # Asynchronous HTTP request to the authentication server
             async with ClientSession() as session:
-                async with session.post(AUTH_URL, json=gql, headers=headers) as response:
-                    print(f'[services.auth] HTTP Response {response.status} {await response.text()}')
+                async with session.post(
+                    AUTH_URL, json=gql, headers=headers
+                ) as response:
+                    print(
+                        f'[services.auth] HTTP Response {response.status} {await response.text()}'
+                    )
                     if response.status == 200:
                         data = await response.json()
                         errors = data.get('errors')
                         if errors:
-                            print(f'[services.auth] errors: {errors}')
+                            print(f'errors: {errors}')
                         else:
-                            user_id = data.get('data', {}).get(query_name, {}).get('claims', {}).get('sub')
+                            user_id = (
+                                data.get('data', {})
+                                .get(query_name, {})
+                                .get('claims', {})
+                                .get('sub')
+                            )
                             if user_id:
                                 print(f'[services.auth] got user_id: {user_id}')
                                 return user_id