← Tool Garage
Ship station
Docker
Packs your app and everything it needs into one box that runs the same on any machine.
1. Learn it
- It exists to kill 'but it works on my computer'.
- A Dockerfile is a recipe; an image is the packed box; a container is the box running.
- You mostly meet it by using someone else's image — a database, a tool — long before you write your own.
- Genuinely advanced. If your host already builds and runs your app for you, you do not need this.
Cost: Free for personal use.
2. Practice it
Simulated — nothing real happensSpot when containers are overkill
Write down what Docker would solve for your current project. If the honest answer is 'nothing yet', write that.
3. Connect it
Real — your own account- 1Install Docker Desktop.
- 2Run one existing image, like a local database, before you ever write a Dockerfile.
MessyDev never signs you up, spends your money, or touches your accounts. You do that part.
4. Use it
Running other people's services locally, and deploying to hosts that expect a container.
Honest alternatives
There is no single correct stack. Any of these would be a reasonable choice instead.
- A managed host that builds for you
- A hosted database instead of a local one