Fixing release pipeline

.gitea-registry-auth.example

@@ -0,0 +1,20 @@
+{
+  "auths": {
+    "git.sschuhmann.de": {
+      "auth": "BASE64_ENCODED_USERNAME_TOKEN"
+    }
+  }
+}
+
+# To use this file:
+# 1. Copy to ~/.docker/config.json
+# 2. Replace BASE64_ENCODED_USERNAME_TOKEN with your actual base64 encoded credentials
+# 3. Run: docker login git.sschuhmann.de
+
+# Generate base64 credentials:
+# echo -n "username:token" | base64
+
+# Example usage:
+# cp .gitea-registry-auth.example ~/.docker/config.json
+# # Edit the file with your credentials
+# docker login git.sschuhmann.de