Docker compose port mapping -FAQs
What is Port Mapping ?
Port mapping is the process of exposing an internal port of a container to a host machine which helps in accessing the application from the web browser .
How to make sure that a port mapping is working correctly ?
You can verify by connecting the application from the specified port from the web browser . If the application is connected successfully from the browser then your port mapping is working correctly .
How to remove all the containers created by docker compose file ?
You can run the command docker compose down command to remove all the containers created by docker compose file .
What would happen if we don’t mention the port in the docker compose file ?
If you don’t mention the ports in docker compose file then you can not connect the application from the web browser .
Can multiple ports mapped to the single port in a docker compose file ?
Yes, multiple ports can be mapped to a single port in a docker compose file .
Docker Compose Port Mapping
Docker is an essential tool that simplifies the deployment process by encapsulating applications within a container. To facilitate various types of communication in a Docker container, we need to expose port. Here in this guide, I will first cover what is Docker and Docker Compose and how Docker has become an essential tool among developers. Then I will guide you through the steps to do port mapping in a Docker compose YAML file.
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