- We made our app run with single command, but we were not able to access them.
- To access our app we needed to publish the ports.
- We know for
docker run command we use -p option.
- On compose we use
ports property
version: '3'
services:
myApp:
image: amantuladhar/docker-kubernetes:v1-web
ports:
- 9090:8080
- You can publish any number of ports you want as you would with
-p option.
- You may have a hint on what docker-compose is trying to achieve.
- If we publish ports with
docker run, we need to specify that in every run.
- But with compose, you don't need it.
- We define the options in
yaml file, and we simply use docker-compose up.
- If you run your application now, you will be able to access it from the host.