### Is there an existing issue for this?

- [X] I have searched the existing issues

### Feature description

Currently, the default port range for external services is configured in `config.py` as follows:
https://github.com/localstack/localstack/blob/075a6fcfcc29af99e1997d73abea6e88351f3c84/localstack/config.py#L462-L472
This means that the default service range is: (4510,4540]
But the example `docker-compose.yml` states (4510, 4530):
https://github.com/localstack/localstack/blob/075a6fcfcc29af99e1997d73abea6e88351f3c84/docker-compose.yml#L12

The currently stated 20 ports can already be somewhat limiting if a lot of external services are started (f.e. lots of clusters or databases). Therefore the range should be broadened and correctly defined in our example `docker-compose.yml` file.

### 🧑‍💻 Implementation

- [x] Broaden the service port range to 50 ports.
- [x] Update the example docker-compose file.

### Anything else?

_No response_
self._provider_config[service] = provider
    def bulk_set_provider_if_not_exists(self, services: List[str], provider: str):
        for service in services:
            self.set_provider_if_not_exists(service, provider)
    def __getitem__(self, item):
        return self.get_provider(item)
    def __setitem__(self, key, value):
        self.set_provider(key, value)
    def __len__(self):
        return len(self._provider_config)
    def __iter__(self):
        return self._provider_config.__iter__()
SERVICE_PROVIDER_CONFIG = ServiceProviderConfig("default")
for key, value in os.environ.items():
    if key.startswith("PROVIDER_OVERRIDE_"):
        SERVICE_PROVIDER_CONFIG.set_provider(
            key.lstrip("PROVIDER_OVERRIDE_").lower().replace("_", "-"), value
        )
if is_in_docker:
    dirs = Directories.for_container()
else:
    dirs = Directories.from_config()
dirs.mkdirs()
for path in [dirs.config, os.path.join(dirs.tmp, ".localstack")]:
    if path and os.path.isfile(path):
        print(
            f"warning: the config file .localstack is deprecated and no longer used, "
            f"please remove it by running rm {path}"
        )