Overview
A private network containers use to communicate.
Definition
A private network containers use to communicate.
Real-world example
App container talks to postgres:5432 on the internal bridge network; only Caddy publishes ports 80/443 to the internet.
Common mistake
Hard-coding localhost for database host inside a container - localhost refers to the app container itself, not Postgres.
Better-PaaS in practice
Add-ons receive stable hostnames on the Docker network. Use injected connection URLs rather than localhost.
FAQ
Is Docker network only relevant to Better-PaaS?
No. Docker network appears across Docker, cloud platforms, and self-hosted tooling. Better-PaaS exposes the concept in deploy logs, dashboard fields, or docs when it affects your app.