chore: add auto-tagging for beta releases

Author: LXSCA7

.github/workflows/docker.yml

@@ -33,6 +33,8 @@ jobs:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
             type=semver,pattern={{version}}
+            type=raw,value=beta,enable=${{ contains(github.ref, '-beta') }}
+            type=raw,value=latest,enable=${{ !contains(github.ref, '-beta') }}
 
       - name: Build and push Docker image
         uses: docker/build-push-action@v5