Cloud Run deploy failing when using --command flag

Question

I am trying to deploy to cloud run using it's --command flag option (see https://cloud.google.com/sdk/gcloud/reference/run/deploy) but it fails anytime I try it. I do not know if I am not understanding how to use it or if it is something happening in google cloud's side.

My Dockerfile looks like the following:

FROM python:3.10-slim
ENV PYTHONUNBUFFERED True
ENV APP_HOME /app
WORKDIR $APP_HOME
COPY . ./
RUN pip install --no-cache-dir -r requirements.txt
ENTRYPOINT ["python"]
CMD ["main.py"]

And I am deploying it with:

gcloud run deploy \
    $SERVICE \
    --image $IMAGE \
    --allow-unauthenticated \
    --memory $MEMORY \
    --concurrency $CONCURRENCY \
    --cpu $CPU \
    --platform managed \
    --region $REGION \
    --command "main2.py"

The logs are as follows:

X Deploying... Internal error occurred while performing container health check.                                                                     
  - Creating Revision...                                                                                                                            
  . Routing traffic...                                                                                                                              
  ✓ Setting IAM Policy...                                                                                                                           
Aborted by user.                                                                                                                                    
ERROR: (gcloud.run.deploy) Aborted by user.

Y tried also using only CMD in the Dockerfile (replace 2 last lines with CMD python main.py) and using --command "python main2.py" without success. I want to use the same Docker image but being able to deploy to run main.py (as default in Dockerfile) or main2.py

Note that if the --command flag is omitted it is deployed successfully and the app works.

The test code is at https://github.com/charlielito/cloud-run-test

The python code is just a dummy flask server. The main2.py is the same for testing purposes, just changed the response string.

import os
from flask import Flask
app = Flask(__name__)

@app.route("/")
def hello_world():
    name = os.environ.get("NAME", "World")
    return "Hello {}!".format(name)

if __name__ == "__main__":
    app.run(debug=True, host="0.0.0.0", port=int(os.environ.get("PORT", 8080)))