What is Portainer and how to manage Docker containers from a web interface
Published on 2026-10-26 by frfrand
Portainer for Docker: visual panel, stacks, volumes and limits
Having Docker doesn't mean everyone on your team knows which container to restart or where the data lives. Portainer puts an interface over containers, images, and stacks. But an interface doesn't fix a poorly designed architecture.
Let's get to the useful part: what would you use it for, how would you get it running, and what happens if it breaks? The first demo rarely reveals all of that.
What you need to know about Portainer
Having Docker doesn't mean everyone on your team knows which container to restart or where the data lives. Portainer puts an interface over containers, images, and stacks. But an interface doesn't fix a poorly designed architecture. This type of tool is best evaluated with a real project you already know: a booking API, a web with payments, or an automation flow. Before installing, distinguish infrastructure, panel, and services that your own team must maintain.
An example of the ones that appear in a real project
A FastAPI API with a worker and PostgreSQL uses several containers. Portainer allows you to see their status; the app still needs consistent transactions, passwords, and coherent backups.
How I would test it step by step
- Install Docker on a test server and follow the official Portainer procedure.
- Limit access to administration and the Docker socket.
- Deploy a Compose stack with API, Redis, and a test database.
- Check volumes and avoid exposing databases directly to the public.
- Update containers and verify that data, logs, and configuration persist.
The test does not end when the domain appears. Create a record, restart the service, and query it again. Review application and database logs. If there is a worker or a webhook, check what happens when an external API stops responding.
The error to avoid
Controlling Docker can grant broad privileges over the server. Never treat the panel as just any public website.
Also, do not leave credentials in repositories or open databases to facilitate connection from your computer. Prefer private networks, tunnels, and minimum permissions. For client applications, try a data restoration: a copy that was never recovered is just a promise.
How would you do the same with ArduMaker?
ArduMaker brings together the VPS, Docker, Git, databases, domains, and MCP operations on a platform. Portainer specializes in the container layer, so it is not advisable to compare them as identical products.
A possible flow is to create a VPS, link GitHub, configure a service for the API, manage PostgreSQL, and publish HTTPS via domain. If you need background processes, set up a worker. If you work with multiple clients, organize resources and members by Company to avoid cross-access.
| Aspect | Portainer | ArduMaker |
|---|---|---|
| Approach | Specialized tool or service | VPS with integrated management tools |
| Publishing | Based on repositories, panel, and runtime | Git, services, and domains from the VPS environment |
| Data | Must be backed up according to architecture | PostgreSQL or Redis with verifiable backups |
| Responsibility | Depends on the provider and configuration | The team maintains its app and controls its server |
The cost that doesn't appear on the first screen
Check the VPS fee, licenses, persistent disk, traffic, and backups. Add configuration and maintenance hours. If the provider offers a managed service, review exactly what they manage and what remains on your side. There are no perfect equivalences between hosting, a panel, and a VPS.
Which one is worth it?
I wouldn't change a tool that already works just to get another logo on the panel. I would consider a migration when it reduces repetitive operations, allows better permission organization, or solves a technical limitation you've already encountered. What matters is being able to repeat deploy, measure, update, and recover.
Sources: Official documentation · Compare with ArduMaker · ArduMaker services.
In short: choose the tool you can actually maintain with your team and the resources you really have. An app that withstands updates and failures is worth more than a ten-second deploy.