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I am new to docker and would really appretiate any help on this. I am running an python flask application in a docker container.

I am using the below command to run the docker image: docker container run -d -p 5000:8051 rep1/doc-image:0.0.1.RELEASE

Below is my docker Logs which show my flask app running

2023-07-18 20:07:18 Dash is running on http://127.0.0.1:8051/
2023-07-18 20:07:18 
2023-07-18 20:07:18  * Serving Flask app 'main'
2023-07-18 20:07:18  * Debug mode: off
2023-07-18 20:07:18 WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
2023-07-18 20:07:18  * Running on http://127.0.0.1:8051
2023-07-18 20:07:18 Press CTRL+C to quit

Below is my dockerfile

FROM tiangolo/uwsgi-nginx-flask:python3.8
WORKDIR /app
COPY . /app
RUN pip install -r requirements.txt
EXPOSE 8051
CMD [ "python","./main.py" ]

I can see that port 5000 is being properly mapped to port 8051 from the output of docker ps command 0.0.0.0:5000->8051/tcp

But still on running localhost:5000, I am getting the error: This page isn’t working Localhost didn’t send any data

I tried specifing the host address when running the command for running docker image, incase the host address in docker is different than localhost, but I am again getting the same error. docker container run -d -h localhost -p 5000:8051 rep1/doc-image:0.0.1.RELEASE

Paavani Khanna
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  • The `Running on http://127.0.0.1:...` message suggests a misconfiguration that means the server won't be reachable from outside its own container. If you're using Flask, does [Deploying a minimal flask app in docker - server connection issues](https://stackoverflow.com/questions/30323224/deploying-a-minimal-flask-app-in-docker-server-connection-issues) help you? – David Maze Jul 19 '23 at 00:36
  • Yes, this works. Thanks – Paavani Khanna Jul 19 '23 at 09:33

0 Answers0