### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

The documentation states that when setting DYNAMODB_SHARE_DB=1 DynamodDB will use a single database for each credential and region. This doesn't work when LocalStack is started from CLI. For example:

`DYNAMODB_SHARE_DB=1 localstack start -d`

In Docker logs you can find:
INFO:localstack.services.dynamodb.server: SharedDb:     false

At least it seems that the environment variable is missing from CONFIG_ENV_VARS which is used for passing the environment variables to container.

Tried the following fix and at least after brief testing it solves the issue:
https://github.com/jvuori/localstack/commit/6bb4a3c68c8675b9548e0f5eb8028397d9ee5a47
Feel free to pull if the fix is appropriate. (Sorry, no unit test...)

### Expected Behavior

`DYNAMODB_SHARE_DB=1 localstack start -d`
should start DynamoDB with:

INFO:localstack.services.dynamodb.server: SharedDb:     true

### How are you starting LocalStack?

With the `localstack` script

### Steps To Reproduce

#### How are you starting localstack (e.g., `bin/localstack` command, arguments, or `docker-compose.yml`)

DYNAMODB_SHARE_DB=1 localstack start -d


### Environment

```markdown
- OS: Windows + WSL2 + Docker CE running inside WSL2
- LocalStack: 0.14.1
```


### Anything else?

_No response_
return str(self.__dict__)
def eval_log_type(env_var_name):
    """get the log type from environment variable"""
    ls_log = os.environ.get(env_var_name, "").lower().strip()
    return ls_log if ls_log in LOG_LEVELS else False
def is_env_true(env_var_name):
    """Whether the given environment variable has a truthy value."""
    return os.environ.get(env_var_name, "").lower().strip() in TRUE_STRINGS
def is_env_not_false(env_var_name):
    """Whether the given environment variable is empty or has a truthy value."""
    return os.environ.get(env_var_name, "").lower().strip() not in FALSE_STRINGS
def load_environment(profile: str = None):
    """Loads the environment variables from ~/.localstack/{profile}.env
    :param profile: the profile to load (defaults to "default")
    """
    if not profile:
        profile = "default"
    path = os.path.join(CONFIG_DIR, f"{profile}.env")
    if not os.path.exists(path):
        return
    import dotenv
    dotenv.load_dotenv(path, override=False)
def is_linux():