fix: try this?

.forgejo/workflows/build.yaml

@@ -9,13 +9,6 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-      - name: Login to git.kakio.us
-        uses: docker/login-action@v3.3.0
-        with:
-          registry: git.kakio.us
-          username: kakious
-          password: ${{ secrets.REPO_PUSH  }}
-
       - name: Build and push
         uses: docker/build-push-action@v2
         with:
@@ -23,6 +16,8 @@ jobs:
           file: ./Dockerfile
           platforms: linux/amd64,linux/arm64
           push: true
+          secrets: |
+            GIT_AUTH_TOKEN=${{ secrets.REPO_PUSH }}
           tags: |
             git.kakio.us/kakious/fibermonitor:latest
             git.kakio.us/kakious/fibermonitor:${{ github.sha }}