Use gitea as registry.

.gitea/workflows/release.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Log into registry
         uses: docker/login-action@v3
         with:
-          registry: cs-registry.ddnss.de
+          registry: cs-git.ddnss.de
           username: ${{ env.USER }}
           password: ${{ env.PASS }}