Docker bridge network Configuration for containers

Question

I have an Angular application deployed in the container . If I log in to the container I can curl to the port 4200.

I have mapped to port 9001 to connect from my host .

But I can't curl from my host machine. What could be the issue? I think I should configure with docker bridge how to do that??

My Docker file:

FROM alpine:latest

#installing required pakages
RUN apk update
RUN apk fix
RUN apk add nodejs nodejs-npm apache2 curl yarn
RUN npm install -g @angular/cli
RUN npm install -g typescript
RUN mkdir -p /var/opt/angular

WORKDIR /opt

COPY . .

WORKDIR /opt/frontend

RUN npm install
RUN ng build
COPY start.sh /opt/frontend/start.sh
RUN chmod +x start.sh

EXPOSE 4200
CMD ["sh", "start.sh"]

Start-up script(start.sh):

#!/bin/bash

ng serve --host 0.0.0.0

While running the docker file I have specified. -p 9001:4200

Answer 1

Since you are using the tag "Docker-Machine" I'm assuming that you are using Docker Toolbox to manage Docker. The problem is most likely an issue with Virtual Box configuration than your Docker configuration.

When you try pinging your container on port 9001, use the ip 0.0.0.0 instead of 127.0.0.1 or localhost. Another way to test would be to get the IP address of the docker-machine, docker-machine ip, and use this IP to ping your container (e.g. use 192.168.99.100:9001.

If you are trying to access the container from another computer you may have to look into a solution like port forwarding as described here.