Dear @yyLeaves,
thanks for reaching out and for participating in the Watermarking task, we are happy about this 
I believe this is the problem: Ensure To Upload Compatible Docker Images
The problem is that Docker Desktop (I assume you use Docker Desktop) builds since a recent update Docker images that are not compatible with the Docker registry of TIRA, but the Docker registry that TIRA uses does not recognize this during pushing the image, only when the image is pulled
I pushed a new version of the TIRA client to PyPi, can you please run pip3 install --upgrade tira, and then follow the steps in this post. This should resolve the problem (it should mostly be disabling containerd in Docker Desktop).
Thanks in advance and please do not hesitate to contact us in case of other questions or problems.
Best regards,
Maik