[Python] is this tutorial -> "Running Airflow in Docker" still working? [closed]

I've followed this tutorial and I could run everything and airflow is running, ok, but if I try to create a new dag (inside the dags folder)

├───dags
│ └───__pycache__
├───plugins
├───config
└───logs


ls inside dags/ :

---- ------------- ------ ----
d----- 01/04/2025 09:16 __pycache__
------ 01/04/2025 08:37 7358 create_tables_dag.py
------ 01/04/2025 08:37 620 dag_dummy.py
------ 01/04/2025 08:37 1148 simple_dag_ru.py


dag example code:

from datetime import datetime, timedelta
from textwrap import dedent

# The DAG object; we'll need this to instantiate a DAG
from airflow import DAG

# Operators; we need this to operate!
from airflow.operators.bash import BashOperator

with DAG(
"tutorial",
# These args will get passed on to each operator
# You can override them on a per-task basis during operator initialization
default_args={
"depends_on_past": False,
"email": ["airflow@example.com"],
"email_on_failure": False,
"email_on_retry": False,
"retries": 1,
"retry_delay": timedelta(minutes=5),
},
description="A simple tutorial DAG",
schedule=timedelta(days=1),
start_date=datetime(2021, 1, 1),
catchup=False,
tags=["example"],
) as dag:

# t1, t2 are examples of tasks created by instantiating operators
t1 = BashOperator(
task_id="print_date_ru",
bash_command="date",
)

t2 = BashOperator(
task_id="sleep",
depends_on_past=False,
bash_command="sleep 5",
retries=3,
)
t1 >> t2


This dag simply doesn't show on UI. I've try to wait (at least 15 minutes), I try to go to the worker cmd inside docker, go to dags folder, run "ls" and nothing is listed. I really don't no what I can do.

Obs: I've used black to correct my files (everything is ok)

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