| Container (Contêiner) |
an isolated “little box” where an app runs, with everything it needs |
| Image (Imagem) |
the “mold” the container is born from (e.g. nginx:1.29) |
| Volume |
a folder that keeps the app’s data and survives updates |
| Proxy |
the “doorman” that receives the domain’s visits and hands them to the right app |
| DNS |
the internet’s “phone book”: it translates the domain into the server’s IP |
| A record (Registro A) |
the DNS line that says “this domain lives at this IP” |
| HTTPS / certificate |
the padlock in the browser: the connection is encrypted |
| Let’s Encrypt |
a free organization that issues HTTPS certificates |
| Deployment (deploy) (Implantação) |
putting a version of the app online |
| Rollback |
going back to the previous version |
| Webhook |
an address another system calls to report an event (e.g. a push to Git) |
| VM |
a virtual computer inside a physical server |
| Snapshot |
a “photo” of the VM so you can go back to that point later |
| Cron |
a schedule of tasks that run on their own at set times |
| S3 |
a type of cloud storage widely used for backups |
| Token |
a long password used by programs instead of people |
