## Problem
Currently, even if `LAMBDA_REMOTE_DOCKER=1`, we unzip the zip files in the directory they are in, which is usually /var/lib/localstack, which usually has a bind mount to the host.
On docker desktop, due to the use of grpc-FUSE (on macos), this can be very slow, about 200 times slower than on volumes / directly on the host. With experimental virtio filesystem enabled (also on macos), this can be reduced to about 30 times as slow, but still problematic.
This means a lambda may take a lot of time processing, for each additional layer some more. This especially affects nodejs lambdas with huge node_modules folders.

## Probable solution
At least if `LAMBDA_REMOTE_DOCKER=1`, we should leave the initial zip files on the bind mount (for persistence etc), but the working directories after unzipping should be located on non-bind mounts, to speed up the IO for unzipping.
result = []
    for region, details in LambdaRegion.regions().items():
        for m in details.event_source_mappings:
            if not func_name or (m["FunctionArn"] in [func_name, func_arn(func_name)]):
                if event_source_arn_matches(mapped=m.get("EventSourceArn"), searched=source_arn):
                    result.append(m)
    return result
def get_function_version(arn, version):
    region = LambdaRegion.get()
    func = region.lambdas.get(arn)
    return format_func_details(func, version=version, always_add_version=True)
def publish_new_function_version(arn):
    region = LambdaRegion.get()
    lambda_function = region.lambdas.get(arn)
    versions = lambda_function.versions
    max_version_number = lambda_function.max_version()
    next_version_number = max_version_number + 1
    latest_hash = versions.get(VERSION_LATEST).get("CodeSha256")
    max_version = versions.get(str(max_version_number))
    max_version_hash = max_version.get("CodeSha256") if max_version else ""
    if latest_hash != max_version_hash:
        versions[str(next_version_number)] = {
            "CodeSize": versions.get(VERSION_LATEST).get("CodeSize"),
            "CodeSha256": versions.get(VERSION_LATEST).get("CodeSha256"),
            "Function": versions.get(VERSION_LATEST).get("Function"),
            "RevisionId": str(uuid.uuid4()),
        }