meltano/meltano Docker image entry point is broken
```bash
$ sudo docker run meltano/meltano --version
docker: Error response from daemon: OCI runtime create failed: container_linux.go:345: starting container process caused "exec: \"poetry run meltano\": executable file not found in $PATH": unknown.
ERRO[0015] error waiting for container: context canceled
```
Introduced by https://gitlab.com/meltano/meltano/-/merge_requests/1964.
issue