## 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.
def publish_version(function):
    region = LambdaRegion.get()
    arn = func_arn(function)
    if arn not in region.lambdas:
        return not_found_error(arn)
    return jsonify(publish_new_function_version(arn))
@app.route("%s/functions/<function>/versions" % API_PATH_ROOT, methods=["GET"])
def list_versions(function):
    region = LambdaRegion.get()
    arn = func_arn(function)
    if arn not in region.lambdas:
        return not_found_error(arn)
    return jsonify({"Versions": do_list_versions(arn)})
@app.route("%s/functions/<function>/aliases" % API_PATH_ROOT, methods=["POST"])
def create_alias(function):
    region = LambdaRegion.get()
    arn = func_arn(function)
    if arn not in region.lambdas:
        return not_found_error(arn)
    data = json.loads(request.data)
    alias = data.get("Name")
    if alias in region.lambdas.get(arn).aliases:
        return error_response(
            "Alias already exists: %s" % arn + ":" + alias,
            404,
            error_type="ResourceConflictException",
        )
    version = data.get("FunctionVersion")
    description = data.get("Description")
    return jsonify(do_update_alias(arn, alias, version, description))