Add VSCode to Datahub image

[balajialg]

Resolves #5716

[balajialg]

I am not sure why the build fails with the following error message. I will probably wait till you return

Images found: 1
Building image us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/primary-user-image
Trying to fetch parent image us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/primary-user-image:2c04061
Traceback (most recent call last):
  File "/root/repo/venv/lib/python3.9/site-packages/requests/adapters.py", line 532, in send
    conn = self._get_connection(request, verify, proxies=proxies, cert=cert)
  File "/root/repo/venv/lib/python3.9/site-packages/requests/adapters.py", line 400, in _get_connection
    conn = self.poolmanager.connection_from_host(
  File "/root/repo/venv/lib/python3.9/site-packages/urllib3/poolmanager.py", line 246, in connection_from_host
    return self.connection_from_context(request_context)
  File "/root/repo/venv/lib/python3.9/site-packages/urllib3/poolmanager.py", line 258, in connection_from_context
    raise URLSchemeUnknown(scheme)
urllib3.exceptions.URLSchemeUnknown: Not supported URL scheme http+docker

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/root/repo/venv/lib/python3.9/site-packages/docker/api/client.py", line 213, in _retrieve_server_version
    return self.version(api_version=False)["ApiVersion"]
  File "/root/repo/venv/lib/python3.9/site-packages/docker/api/daemon.py", line 181, in version
    return self._result(self._get(url), json=True)
  File "/root/repo/venv/lib/python3.9/site-packages/docker/utils/decorators.py", line 44, in inner
    return f(self, *args, **kwargs)
  File "/root/repo/venv/lib/python3.9/site-packages/docker/api/client.py", line 236, in _get
    return self.get(url, **self._set_request_timeout(kwargs))
  File "/root/repo/venv/lib/python3.9/site-packages/requests/sessions.py", line 602, in get
    return self.request("GET", url, **kwargs)
  File "/root/repo/venv/lib/python3.9/site-packages/requests/sessions.py", line 589, in request
    resp = self.send(prep, **send_kwargs)
  File "/root/repo/venv/lib/python3.9/site-packages/requests/sessions.py", line 703, in send
    r = adapter.send(request, **kwargs)
  File "/root/repo/venv/lib/python3.9/site-packages/requests/adapters.py", line 534, in send
    raise InvalidURL(e, request=request)
requests.exceptions.InvalidURL: Not supported URL scheme http+docker

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/root/repo/venv/bin/hubploy", line 33, in <module>
    sys.exit(load_entry_point('hubploy==0.3', 'console_scripts', 'hubploy')())
  File "/root/repo/venv/lib/python3.9/site-packages/hubploy/__main__.py", line 122, in main
    image.build(not args.no_cache)
  File "/root/repo/venv/lib/python3.9/site-packages/hubploy/config.py", line 159, in build
    parent_image_spec = self.fetch_parent_image()
  File "/root/repo/venv/lib/python3.9/site-packages/hubploy/config.py", line 129, in fetch_parent_image
    self.docker.images.pull(parent_image_spec)
  File "/root/repo/venv/lib/python3.9/site-packages/hubploy/config.py", line 74, in docker
    self.__class__._docker = docker.from_env()
  File "/root/repo/venv/lib/python3.9/site-packages/docker/client.py", line 94, in from_env
    return cls(
  File "/root/repo/venv/lib/python3.9/site-packages/docker/client.py", line 45, in __init__
    self.api = APIClient(*args, **kwargs)
  File "/root/repo/venv/lib/python3.9/site-packages/docker/api/client.py", line 197, in __init__
    self._version = self._retrieve_server_version()
  File "/root/repo/venv/lib/python3.9/site-packages/docker/api/client.py", line 220, in _retrieve_server_version
    raise DockerException(
docker.errors.DockerException: Error while fetching server API version: Not supported URL scheme http+docker

Exited with code exit status 1