How to send the postman request to docker containers hello word application?

Question

I am trying to build the hello word docker image. But I am not able to get any response from POSTMAN GET request. Could you pls help to resolve?

Steps Tried:

1. My hello word program:

2.My docker file:

3. my folder structure

4.Building image:

5.Checking image:

6.Checking docker machine ip:

7. Create and run the container with docker machine ip

8. Checking logs:

9. Query with post man both local host and docker machine ip. ( No response)

Note: Tried with all options text,JSON,HTML

After that I have deleted the container & Tried to create and run with local host ip as below. Still no response from POSTMAN ( docker machine ip & local host ip)

As Ewong suggested & other form suggested I have modified the code as below.

FROM python

WORKDIR /program

COPY requirements.txt .

RUN pip3 install -r requirements.txt

copy src/ .

EXPOSE 5000

CMD [ "python","./app.py","--host", "0.0.0.0" ]


from flask import Flask

app = Flask(__name__)

@app.route("/")
def home():
    return "Hello world"


if __name__ == "__main__":
    app.run()

But when i give curl command failed:

Answer 1

Your docker image app is listening on 127.0.0.1:5000. It's going to ignore everything coming in from the external IP.

Change:

    app.run(debug=True, host="127.0.0.1", port=5000)

to:

    app.run(debug=True, host="0.0.0.0", port=5000)