diff --git a/content/en/docs/03/Caddyfile-docker b/content/en/docs/03/Caddyfile-docker
new file mode 100644
index 0000000..d6a4ec1
--- /dev/null
+++ b/content/en/docs/03/Caddyfile-docker
@@ -0,0 +1,11 @@
+# SPDX-FileCopyrightText: 2023 Marlon W (Mawoka)
+#
+# SPDX-License-Identifier: MPL-2.0
+
+:8080 {
+	reverse_proxy * http://frontend:3000
+	reverse_proxy /api/* http://api:8081
+	reverse_proxy /openapi.json http://api:8081 # Only use if you need to serve the OpenAPI spec
+	reverse_proxy /socket.io/* http://api:8081
+
+}
diff --git a/content/en/docs/03/_index.md b/content/en/docs/03/_index.md
index bc9a57c..9c4d313 100644
--- a/content/en/docs/03/_index.md
+++ b/content/en/docs/03/_index.md
@@ -10,13 +10,14 @@ sectionnumber: 3
 ### The Challenge
 
 After we have learned the basic Dagger Functions, we want to apply our new knowledge to solve a real life problem:
+
 We would like to conduct a survey regarding the popularity of the different Dagger SDKs!
 
 
 ### The Candidate
 
-Fortunately, there is a free open-source quiz app called [ClassQuiz](https://classquiz.de/)
-It allows the creation of shareable, fully customizable quizzes and surveys.
+Fortunately, there is a free open-source quiz app called [ClassQuiz](https://classquiz.de/)\
+It allows the creation of shareable, fully customizable quizzes and surveys.\
 The app is split in a frontend and an api part:
 
 * The frontend is written in type script and uses a redis memcache.
@@ -47,14 +48,48 @@ Since the app has some hard-coded configurations that would interfere with our s
 
 {{< /details >}}
 
+Create first the `config.patch` file in the root of your git folder. Then add the content of the above patch.
+
 ```bash
 patch classquiz/config.py < config.patch
 ```
 
-The app also binds the privileged port `80`, which would be an obstacle as well. So let's replace all occurrences of `:80` in `Caddyfile-docker` with `:8081` or another port of your choice.
+{{% alert title="Note" color="primary" %}}
+
+If patching does not work, overwrite the file `classquiz/config.py` with the content from the following `config.py` file.
+
+{{< details title="show final config.py file" >}}
+
+{{< readfile file="config.py" code="true" lang="Python" >}}
+
+{{< /details >}}
+
+{{% /alert %}}
+
+The app also binds the privileged port `80`, which would be an obstacle as well.\
+So let's replace all occurrences of `:80` in `Caddyfile-docker` with `:8081`.\
+Additionally the missing protocol has to be added to the last `reverse_proxy` line. Add `http://` in front of `api:80`.
+
+Do it by hand or use the following `sed` commands:
+
+```bash
+sed -i 's# api:80# http://api:80#g' Caddyfile-docker
+sed -i 's#api:80#api:8081#g' Caddyfile-docker
+```
+
+If patching does not work, overwrite the file `Caddyfile-docker` with the content from the following `Caddyfile-docker` file.
+
+{{< details title="show final Caddyfile-docker file" >}}
+
+{{< readfile file="Caddyfile-docker" code="true" >}}
+
+{{< /details >}}
+
+#### Start using Dagger
 
+As we learnt in the first labs, Dagger functions are needed to encapsulate our pipeline functionality.
 
-#### Initialize a Dagger Module
+In Dagger, everything is a Module, therefore the first step is to initialize a Dagger Module.
 
 A new Dagger module in Go, Python or TypeScript can be initialized by running `dagger init` inside the app's root directory,
 using the `--source` flag to specify a directory for the module's source code.
diff --git a/content/en/docs/03/config.patch b/content/en/docs/03/config.patch
index 132ab26..e78dda9 100644
--- a/content/en/docs/03/config.patch
+++ b/content/en/docs/03/config.patch
@@ -1,12 +1,17 @@
---- config.py	2024-08-27 09:12:30.871018892 +0200
-+++ config.py	2024-08-27 09:12:53.055075688 +0200
-@@ -30,16 +30,16 @@
+diff --git a/classquiz/config.py b/classquiz/config.py
+index b6f7635..fbc66d5 100644
+--- a/classquiz/config.py
++++ b/classquiz/config.py
+@@ -29,21 +29,21 @@ class Settings(BaseSettings):
+     """
  
      root_address: str = "http://127.0.0.1:8000"
-     redis: RedisDsn = "redis://localhost:6379/0?decode_responses=True"
+-    redis: RedisDsn = "redis://localhost:6379/0?decode_responses=True"
 -    skip_email_verification: bool = False
+-    db_url: str | PostgresDsn = "postgresql://postgres:mysecretpassword@localhost:5432/classquiz"
++    redis: RedisDsn = "redis://redisd:6379/0?decode_responses=True"
 +    skip_email_verification: bool = True
-     db_url: str | PostgresDsn = "postgresql://postgres:mysecretpassword@localhost:5432/classquiz"
++    db_url: str | PostgresDsn = "postgresql://postgres:classquiz@postgresd:5432/classquiz"
      hcaptcha_key: str | None = None
      recaptcha_key: str | None = None
 -    mail_address: str
@@ -24,7 +29,12 @@
      access_token_expire_minutes: int = 30
      cache_expiry: int = 86400
      sentry_dsn: str | None
-@@ -60,7 +60,7 @@
+-    meilisearch_url: str = "http://127.0.0.1:7700"
++    meilisearch_url: str = "http://meilisearchd:7700"
+     meilisearch_index: str = "classquiz"
+     google_client_id: Optional[str]
+     google_client_secret: Optional[str]
+@@ -60,7 +60,7 @@ class Settings(BaseSettings):
      storage_backend: str | None = "local"
  
      # if storage_backend == "local":
diff --git a/content/en/docs/03/config.py b/content/en/docs/03/config.py
new file mode 100644
index 0000000..fbc66d5
--- /dev/null
+++ b/content/en/docs/03/config.py
@@ -0,0 +1,107 @@
+# SPDX-FileCopyrightText: 2023 Marlon W (Mawoka)
+#
+# SPDX-License-Identifier: MPL-2.0
+
+import re
+from functools import lru_cache
+
+from redis import asyncio as redis_lib
+import redis as redis_base_lib
+from pydantic import BaseSettings, RedisDsn, PostgresDsn, BaseModel
+import meilisearch as MeiliSearch
+from typing import Optional
+from arq import create_pool
+from arq.connections import RedisSettings, ArqRedis
+
+from classquiz.storage import Storage
+
+
+class CustomOpenIDProvider(BaseModel):
+    scopes: str = "openid email profile"
+    server_metadata_url: str
+    client_id: str
+    client_secret: str
+
+
+class Settings(BaseSettings):
+    """
+    Settings class for the shop app.
+    """
+
+    root_address: str = "http://127.0.0.1:8000"
+    redis: RedisDsn = "redis://redisd:6379/0?decode_responses=True"
+    skip_email_verification: bool = True
+    db_url: str | PostgresDsn = "postgresql://postgres:classquiz@postgresd:5432/classquiz"
+    hcaptcha_key: str | None = None
+    recaptcha_key: str | None = None
+    mail_address: str = "some@example.org"
+    mail_password: str = "some@example.org"
+    mail_username: str = "some@example.org"
+    mail_server: str = "some.example.org"
+    mail_port: int = "525"
+    secret_key: str = "secret"
+    access_token_expire_minutes: int = 30
+    cache_expiry: int = 86400
+    sentry_dsn: str | None
+    meilisearch_url: str = "http://meilisearchd:7700"
+    meilisearch_index: str = "classquiz"
+    google_client_id: Optional[str]
+    google_client_secret: Optional[str]
+    github_client_id: Optional[str]
+    github_client_secret: Optional[str]
+    custom_openid_provider: CustomOpenIDProvider | None = None
+    telemetry_enabled: bool = True
+    free_storage_limit: int = 1074000000
+    pixabay_api_key: str | None = None
+    mods: list[str] = []
+    registration_disabled: bool = False
+
+    # storage_backend
+    storage_backend: str | None = "local"
+
+    # if storage_backend == "local":
+    storage_path: str | None = "/app/data"
+
+    # if storage_backend == "s3":
+    s3_access_key: str | None
+    s3_secret_key: str | None
+    s3_bucket_name: str = "classquiz"
+    s3_base_url: str | None
+
+    class Config:
+        env_file = ".env"
+        env_file_encoding = "utf-8"
+        env_nested_delimiter = "__"
+
+
+async def initialize_arq():
+    # skipcq: PYL-W0603
+    global arq
+    arq = await create_pool(RedisSettings.from_dsn(settings.redis))
+
+
+@lru_cache()
+def settings() -> Settings:
+    return Settings()
+
+
+pool = redis_lib.ConnectionPool().from_url(settings().redis)
+
+redis: redis_base_lib.client.Redis = redis_lib.Redis(connection_pool=pool)
+arq: ArqRedis = ArqRedis(pool_or_conn=pool)
+storage: Storage = Storage(
+    backend=settings().storage_backend,
+    storage_path=settings().storage_path,
+    access_key=settings().s3_access_key,
+    secret_key=settings().s3_secret_key,
+    bucket_name=settings().s3_bucket_name,
+    base_url=settings().s3_base_url,
+)
+
+meilisearch = MeiliSearch.Client(settings().meilisearch_url)
+
+ALLOWED_TAGS_FOR_QUIZ = ["b", "strong", "i", "em", "small", "mark", "del", "sub", "sup"]
+
+ALLOWED_MIME_TYPES = ["image/png", "video/mp4", "image/jpeg", "image/gif", "image/webp"]
+
+server_regex = rf"^{re.escape(settings().root_address)}/api/v1/storage/download/.{{36}}--.{{36}}$"