Use pure builds in Dockerfile

[bddvlpr]

Instead of builds being replicated half on the host machine and half containerized, this process should be fully containerized to prevent unwanted side effects on other machines and to allow for reproducible builds.

A follow-up PR for OpenShock/API will come after.

[LucHeart]

Also missing CI integration

[LucHeart]

The CI would no longer run on PR's. It should still run on PR, but not push the image.
Also am not sure where you define the actual registry and image name on build-push action anymore? Doesnt seem like it specifics as tag at all

[bddvlpr]

The CI would no longer run on PR's. It should still run on PR, but not push the image. Also am not sure where you define the actual registry and image name on build-push action anymore? Doesnt seem like it specifics as tag at all

The CI would still run on any PR, push or manual dispatch, see here. I don't see the point in building the Docker image on CI when it already is built in the Node CI, if you want I can refactor this.

Also am not sure where you define the actual registry and image name on build-push action anymore? Doesnt seem like it specifics as tag at all

docker/metadata-actions will extract metadata from the actions event such as a tag being built (it's ref) or branch puch (master, develop). As for the image name, check here.