Bump verl to 0.5.0

[hytopoulos]

Bumped the verl version to 0.5.0 with its respective docker image. Also, the pip command now builds the local clone (like is done in verl docs) instead of downloading a wheel.

The protobuf installed in the docker image is 5.29.5, which modal does not support, so the image also requires .pip_install(f"protobuf==4.25.3"). I thought I would mention it here, along with the stack trace, instead of including it in the commit.

Traceback (most recent call last):
  File "/usr/lib/python3.10/runpy.py", line 187, in _run_module_as_main
    mod_name, mod_spec, code = _get_module_details(mod_name, _Error)
  File "/usr/lib/python3.10/runpy.py", line 110, in _get_module_details
    __import__(pkg_name)
  File "/pkg/modal/__init__.py", line 12, in <module>
    from ._runtime.execution_context import current_function_call_id, current_input_id, interact, is_local
  File "/pkg/modal/_runtime/execution_context.py", line 6, in <module>
    from modal._utils.async_utils import synchronize_api
  File "/pkg/modal/_utils/async_utils.py", line 29, in <module>
    from .logger import logger
  File "/pkg/modal/_utils/logger.py", line 47, in <module>
    configure_logger(logger, log_level, log_format)
  File "/pkg/modal/_utils/logger.py", line 7, in configure_logger
    from modal.config import config
  File "/pkg/modal/config.py", line 94, in <module>
    from modal_proto import api_pb2
  File "/pkg/modal_proto/api_pb2.py", line 16, in <module>
    from modal_proto import options_pb2 as modal__proto_dot_options__pb2
  File "/pkg/modal_proto/options_pb2.py", line 29, in <module>
    google_dot_protobuf_dot_descriptor__pb2.FieldOptions.RegisterExtension(audit_target_attr)
AttributeError: type object 'FieldOptions' has no attribute 'RegisterExtension'

Type of Change

• Example updates (Bug fixes, new features, etc.)

Monitoring Checklist

• Example is configured for testing in the synthetic monitoring system, or lambda-test: false is provided in the example frontmatter and I have gotten approval from a maintainer
  • Example is tested by executing with modal run, or an alternative cmd is provided in the example frontmatter (e.g. cmd: ["modal", "serve"])
  • Example is tested by running the cmd with no arguments, or the args are provided in the example frontmatter (e.g. args: ["--prompt", "Formula for room temperature superconductor:"]
  • Example does not require third-party dependencies besides fastapi to be installed locally (e.g. does not import requests or torch in the global scope or other code executed locally)

Documentation Site Checklist

Build Stability

• Example pins all dependencies in container images
  • Example pins container images to a stable tag like v1, not a dynamic tag like latest
  • Example specifies a python_version for the base image, if it is used
  • Example pins all dependencies to at least SemVer minor version, ~=x.y.z or ==x.y, or we expect this example to work across major versions of the dependency and are committed to maintenance across those versions
    • Example dependencies with version < 1 are pinned to patch version, ==0.y.z