fix: auth to ghcr.io (#63)

Signed-off-by: Matthias Riegler <[email protected]>

Author: xvzf

.github/workflows/release.yaml

@@ -112,6 +112,13 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
+      - name: 'Login to GitHub Container Registry'
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{github.actor}}
+          password: ${{secrets.GITHUB_TOKEN}}
+
       # Download FanUnit Firmware
       - name: Download fanunit firmware
         uses: actions/download-artifact@v4