Include uvx binary to docker image. (#4764)
Fix #4763
## Summary
Modify the Dockerfile to include the uvx binary in the docker image
`ghcr.io/astral-sh/uv`.
## Test Plan
I have verified that the uvx binary is included in the Docker image
built with the following command and can be executed.
```bash
# cd repository root
docker build -t uv:add_uvx .
docker run --rm --entrypoint /uvx uv -V
uv-tool-run 0.2.21
```
