[Bug]: Documentation outdated

### What happened? [This guide](https://aswf-openrv.readthedocs.io/en/latest/build_system/config_linux_rocky89.html#build-the-image-and-run) needs updating. ``` docker build -t openrv-rocky9 -f Dockerfile.Linux-Rocky9 . [+] Building 0.1s (1/1) FINISHED docker:default => [internal] load build definition from Dockerfile.Linux-Rocky9 0.0s => => transferring dockerfile: 2B 0.0s ERROR: failed to build: failed to solve: failed to read dockerfile: open Dockerfile.Linux-Rocky9: no such file or directory ``` ### List all the operating systems versions where this is happening * ### On what computer hardware is this happening? * ### Relevant console log output ```shell ``` ### Environment variables _No response_ ### Extra information _No response_ ### Code of Conduct - [x] I agree to follow this project's Code of Conduct