## 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.
"""Update an existing event source mapping
    ---
    operationId: 'updateEventSourceMapping'
    parameters:
        - name: 'request'
          in: body
    """
    data = json.loads(to_str(request.data))
    if not mapping_uuid:
        return jsonify({})
    try:
        mapping = update_event_source(mapping_uuid, data)
        return jsonify(mapping)
    except ValueError as error:
        error_type, message = error.args
        return error_response(message, code=400, error_type=error_type)
@app.route("%s/event-source-mappings/<mapping_uuid>" % API_PATH_ROOT, methods=["DELETE"])
def delete_event_source_mapping(mapping_uuid):
    """Delete an event source mapping
    ---
    operationId: 'deleteEventSourceMapping'
    """
    if not mapping_uuid:
        return jsonify({})
    mapping = delete_event_source(mapping_uuid)
    return jsonify(mapping)
@app.route("%s/functions/<function>/versions" % API_PATH_ROOT, methods=["POST"])