### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

after mounting my local stack with docker compose
creating a function with boto3
Be sure my function is well created by checking in with a BOTO3 get_function.

And trying to invoke the function with Boto3 invoke function i get an error as response

```
{
   "errorMessage":"expected string or bytes-like object",
   "errorType":"TypeError",
   "stackTrace":[
      "  File \"/opt/code/localstack/localstack/services/awslambda/lambda_api.py\", line 734, in run_lambda\n    callback=callback,\n",
      "  File \"/opt/code/localstack/localstack/services/awslambda/lambda_executors.py\", line 224, in execute\n    return do_execute()\n",
      "  File \"/opt/code/localstack/localstack/services/awslambda/lambda_executors.py\", line 214, in do_execute\n    return _run(func_arn=func_arn)\n",
      "  File \"/opt/code/localstack/localstack/utils/cloudwatch/cloudwatch_util.py\", line 157, in wrapped\n    raise e\n",
      "  File \"/opt/code/localstack/localstack/utils/cloudwatch/cloudwatch_util.py\", line 153, in wrapped\n    result = func(*args, **kwargs)\n",
      "  File \"/opt/code/localstack/localstack/services/awslambda/lambda_executors.py\", line 201, in _run\n    raise e\n",
      "  File \"/opt/code/localstack/localstack/services/awslambda/lambda_executors.py\", line 189, in _run\n    result = self._execute(func_arn, func_details, event, context, version)\n",
      "  File \"/opt/code/localstack/localstack/services/awslambda/lambda_executors.py\", line 535, in _execute\n    return super(LambdaExecutorReuseContainers, self)._execute(func_arn, *args, **kwargs)\n",
      "  File \"/opt/code/localstack/localstack/services/awslambda/lambda_executors.py\", line 441, in _execute\n    cmd = self.prepare_execution(func_details, environment, command)\n",
      "  File \"/opt/code/localstack/localstack/services/awslambda/lambda_executors.py\", line 497, in prepare_execution\n    container_info = self.prime_docker_container(func_details, env_vars, lambda_cwd)\n",
      "  File \"/opt/code/localstack/localstack/services/awslambda/lambda_executors.py\", line 577, in prime_docker_container\n    cmd = self.get_container_startup_command(func_details, env_vars, lambda_cwd)\n",
      "  File \"/opt/code/localstack/localstack/services/awslambda/lambda_executors.py\", line 632, in get_container_startup_command\n    lambda_cwd_on_host = Util.get_host_path_for_path_in_docker(lambda_cwd)\n",
      "  File \"/opt/code/localstack/localstack/services/awslambda/lambda_executors.py\", line 1072, in get_host_path_for_path_in_docker\n    return re.sub(r\"^%s/(.*)$\" % config.TMP_FOLDER, r\"%s/\\1\" % config.HOST_TMP_FOLDER, path)\n",
      "  File \"/usr/lib/python3.7/re.py\", line 194, in sub\n    return _compile(pattern, flags).sub(repl, string, count)\n"
   ]
}
```


The docker stack log say me pretty the same thing.

```
localstack_1  | 2021-08-16 12:25:45,422:API: 127.0.0.1 - - [16/Aug/2021 12:25:45] "POST / HTTP/1.1" 200 -
localstack_1  | 2021-08-16T12:25:45:INFO:localstack.services.awslambda.lambda_api: Error executing Lambda function arn:aws:lambda:us-east-1:000000000000:function:testlambda2: expected string or bytes-like object Traceback (most recent call last):
localstack_1  |   File "/opt/code/localstack/localstack/services/awslambda/lambda_api.py", line 734, in run_lambda
localstack_1  |     callback=callback,
localstack_1  |   File "/opt/code/localstack/localstack/services/awslambda/lambda_executors.py", line 224, in execute
localstack_1  |     return do_execute()
localstack_1  |   File "/opt/code/localstack/localstack/services/awslambda/lambda_executors.py", line 214, in do_execute
localstack_1  |     return _run(func_arn=func_arn)
localstack_1  |   File "/opt/code/localstack/localstack/utils/cloudwatch/cloudwatch_util.py", line 157, in wrapped
localstack_1  |     raise e
localstack_1  |   File "/opt/code/localstack/localstack/utils/cloudwatch/cloudwatch_util.py", line 153, in wrapped
localstack_1  |     result = func(*args, **kwargs)
localstack_1  |   File "/opt/code/localstack/localstack/services/awslambda/lambda_executors.py", line 201, in _run
localstack_1  |     raise e
localstack_1  |   File "/opt/code/localstack/localstack/services/awslambda/lambda_executors.py", line 189, in _run
localstack_1  |     result = self._execute(func_arn, func_details, event, context, version)
localstack_1  |   File "/opt/code/localstack/localstack/services/awslambda/lambda_executors.py", line 535, in _execute
localstack_1  |     return super(LambdaExecutorReuseContainers, self)._execute(func_arn, *args, **kwargs)
localstack_1  |   File "/opt/code/localstack/localstack/services/awslambda/lambda_executors.py", line 441, in _execute
localstack_1  |     cmd = self.prepare_execution(func_details, environment, command)
localstack_1  |   File "/opt/code/localstack/localstack/services/awslambda/lambda_executors.py", line 497, in prepare_execution
localstack_1  |     container_info = self.prime_docker_container(func_details, env_vars, lambda_cwd)
localstack_1  |   File "/opt/code/localstack/localstack/services/awslambda/lambda_executors.py", line 577, in prime_docker_container
localstack_1  |     cmd = self.get_container_startup_command(func_details, env_vars, lambda_cwd)
localstack_1  |   File "/opt/code/localstack/localstack/services/awslambda/lambda_executors.py", line 632, in get_container_startup_command
localstack_1  |     lambda_cwd_on_host = Util.get_host_path_for_path_in_docker(lambda_cwd)
localstack_1  |   File "/opt/code/localstack/localstack/services/awslambda/lambda_executors.py", line 1072, in get_host_path_for_path_in_docker
localstack_1  |     return re.sub(r"^%s/(.*)$" % config.TMP_FOLDER, r"%s/\1" % config.HOST_TMP_FOLDER, path)
localstack_1  |   File "/usr/lib/python3.7/re.py", line 194, in sub
localstack_1  |     return _compile(pattern, flags).sub(repl, string, count)
localstack_1  | TypeError: expected string or bytes-like object
```



### Expected Behavior

Having the lambda to run  and return me the output of my function

### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

build image from my app.py

app.py content:

```
import json
from time import sleep

def handler(event,context):
    #the sleep timer is just to have enougth time to see what happen when function is called
    sleep(5)
    return {
        'statusCode': 200,
        'body': json.dumps({"event":event,"message":"hello from localstack"})
            }
```

Build it and tag it locally.
`docker build -t testlambda -f Dockerfile .`

with following docker file

```
FROM public.ecr.aws/lambda/python:3.8

# Copy function code
COPY app.py ${LAMBDA_TASK_ROOT}

# Install the function's dependencies using file requirements.txt
# from your project folder.

COPY requirements.txt  .
RUN  pip3 install -r requirements.txt --target "${LAMBDA_TASK_ROOT}"

# Set the CMD to your handler (could also be done as a parameter override outside of the Dockerfile)
CMD [ "app.handler" ] 
```

_NB: try to dirrectly invoke lambda by launching my lambda image
`docker run -p 9000:8000 testlambda:latest and it works`
and query it with a curl
It works._

Create my local network on docker 
`docker network create -d bridge localstacknet`

Now launch my local stack from a docker-compose.yml as following.

```
version: '3.3'
services:
  localstack:
    image: localstack/localstack:0.12.15
    
    ports:
      - "53:53"
      - "443:443"
      - "4566-4583:4566-4583"
    environment:
      - DATA_DIR=/tmp/localstack/data
      - DEBUG=1
      - DOCKER_HOST=unix:///var/run/docker.sock
      - HOSTNAME_EXTERNAL=localstack
      - HOST_TMP_FOLDER= E:/Sources/container_Lambda/storage_localstack
      - LAMBDA_EXECUTOR=docker-reuse
      - LAMBDA_REMOVE_CONTAINERS=true
      - LAMBDA_REMOTE_DOCKER=true
      - LAMBDA_DOCKER_NETWORK= localstacknet
      - SERVICES=lambda,s3,iam,cloudwatch,dynamodb
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock"
      - "E:/Sources/container_Lambda/storage_localstack/TMP:/tmp/localstack"
    networks:
      - localstacknet
    
    privileged: true

  
networks:
  localstacknet:
    external: true
    driver : bridge
    name: localstacknet
```

use boto3 to connect to local stack and create function.

Get the error when trying to invoke








### Environment

```markdown
- OS: Windows
- LocalStack: 0.12.15
```


### Anything else?

_No response_
import base64
import contextlib
import glob
import json
import logging
import os
import re
import subprocess
import sys
import threading
import time
import traceback
from multiprocessing import Process, Queue
from typing import Any, Dict, Optional, Tuple, Union
from localstack import config
from localstack.services.awslambda.lambda_utils import (
    LAMBDA_RUNTIME_JAVA8,
    LAMBDA_RUNTIME_JAVA11,
    LAMBDA_RUNTIME_PROVIDED,
)
from localstack.services.install import INSTALL_PATH_LOCALSTACK_FAT_JAR
from localstack.utils import bootstrap
from localstack.utils.aws import aws_stack
from localstack.utils.aws.aws_models import LambdaFunction
from localstack.utils.aws.dead_letter_queue import (
    lambda_error_to_dead_letter_queue,