Try this?

.woodpecker/.build.yml

@@ -7,6 +7,25 @@ steps:
       auto_tag: true
       tags: 
         - vel-${CI_PIPELINE_NUMBER}
-      username: simcop2387
+      logins:
-      password:
+        - registry: https://gitea.simcop2387.info/
-        from_secret: docker_token
+          username: simcop2387
+          password:
+            from_secret: docker_token
+
+
+
+# steps:
+#   cache-os:
+#     image: woodpeckerci/plugin-docker-buildx
+#     settings:
+#       repo: gitea.simcop2387.info/simcop2387/text-gen-os-raw
+#       dockerfile: cache-main/Dockerfile 
+#       auto_tag: true
+#       tags: 
+#         - build-${CI_PIPELINE_NUMBER}
+#       logins:
+#         - registry: https://gitea.simcop2387.info/
+#           username: simcop2387
+#           password:
+#             from_secret: docker_token