fix: github ci spec

## Summary

* fixed missing error handler in main
* add injectable build string in main
* add (dynamically linked) docker build
* add github CI workflow
* add extra but useful dev files in dev folder

* closes #93

## Notes

* We'll move to a self-hosted CI runner once it is installed on Gitea.

Reviewed-on: #174
Co-authored-by: Mohammed Sohail <sohailsameja@gmail.com>
Co-committed-by: Mohammed Sohail <sohailsameja@gmail.com>

.github/workflows/docker.yaml

@@ -45,9 +45,7 @@ jobs:
         with:
           context: ./
           file: ./Dockerfile
-          platforms:
-            - linux/amd64
-            - linux/arm64
+          platforms: linux/amd64
           push: true
           build-args: |
             BUILD=${{ env.RELEASE_SHORT_COMMIT }}