br: updated readme [skip ci]

Signed-off-by: Brian Roland <broland@nvidia.com>

Author: broland-hat

README.md

@@ -81,6 +81,7 @@ With a locally cloned repository and initialized submodules, build the BioNeMo c
 ```bash
 docker buildx build . -t my-container-tag
 ```
+If you see an error message like `No file descriptors available (os error 24)`, add the option `--ulimit nofile=65535:65535` to the docker build command.  
 
 #### VSCode Devcontainer for Interactive Debugging