TL;DR: docker compose up is a development command; there is no compose-to-cloud button, and service names like http://api:8080 only resolve on the machine running Compose. Four honest ways to get a multi-container app into production: split the services onto a container PaaS (what we recommend for most small apps, with the exact changes to make), Compose on a $4–10 VPS, a self-hosted PaaS like Coolify or CapRover for Compose parity, or Kubernetes via kompose when you really need it. Plus the networking, data and security checklist and three common layouts.

You have built something real. Your docker-compose up spins up a frontend, an API, and a database — all talking to each other, all working perfectly on your laptop. Now you want the world to see it.

Here is where most developers hit a wall. Docker Compose is a local development tool.

It was designed to orchestrate containers on a single machine, not to deploy them to the cloud with SSL certificates, monitoring, and auto-restarts.…