My Application Ionic dockerize isn't running in the browser

Question

I'm developing an ionic study app to learn Docker.

I did all the steps to create the image:

1 - I created the Dockerfile whit scripts:

FROM node:18.10.0-alpine3.15
WORKDIR /app
COPY . .
RUN npm i
EXPOSE 4200
CMD ["npm", "start"]

2 - In directory of Dockerfile for CMD executed docker build -t mcd . and then docker run -p 4200:4200 mcd

3 - The application execute no errors. But can't open application in the browser in url localhost:4200.

Where's the error?

I executed the commands:

docker run -p 4200:4200 mcd

docker run -d -p 4200:4200 mcd

docker run mcd

Answer 1

I had the same problem :)

The solution is to modify package.json and put ng serve --host 0.0.0.0 --port 4200 to start