Buil docker with environment variables

Hi, I try to build a docker from github repo:https://github.com/weaviate/multi2vec-clip-inference. And I setup env variables but I have the error: 2025-03-31 18:51:46 [INFO] > [8/9] RUN ./download.py: 2025-03-31 18:51:46 [INFO] 2.112 ERROR:root:Fatal: TEXT_MODEL_NAME is required How can I enable env variables at build? Thanks,