feat: dockerfile:port 8080 exposed (#3)

## Description

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This PR [adds/removes/fixes/replaces] the [feature/bug/etc]. 
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This PR exposes port 8080 in the Dockerfile, allowing external access to
the container's process listening on that port.

## What type of PR is this? (check all applicable)

- [x] 🍕 Feature
- [ ] 🐛 Bug Fix
- [ ] 📝 Documentation Update
- [ ] 🧑‍💻 Code Refactor
- [ ] 🔥 Performance Improvements
- [ ] ✅ Test
- [x] 🤖 Build
- [ ] ⏩ Revert

## Related Tickets & Documents
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## Mobile & Desktop Screenshots/Recordings

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## Steps to QA
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1. Build the image using the updated Dockerfile.
2. Run the container and verify it starts successfully.

## Added to documentation?

- [ ] 📜 README.md
- [ ] 📓 docs.example.com
- [x] 🙅 no documentation needed

dockerfile

@@ -2,4 +2,6 @@ FROM go:1.20.2
 
 WORKDIR /app
 
+EXPOSE 8080
+
 CMD ["go", "run", "main.go"]