Use beta tag for Sirepo image

[mrakitin]

This PR updates the Sirepo startup script to (1) resolve the issue reported in radiasoft/sirepo#4749, and (2) be reusable by the start-sirepo-action (NSLS-II/start-sirepo-action#1).

I also hit this issue (psf/requests#6432) with requests and urllib3 (it's failing in scheduled runs in main as well).

Also, Sirepo API for bluesky auth changed and was causing these issues:

Client side:

In [2]: from sirepo_bluesky.sirepo_bluesky import SirepoBluesky

In [3]: sb = SirepoBluesky(server="http://localhost:8000", secret="bluesky")

In [4]: data, schema = sb.auth("srw", "00000000")
---------------------------------------------------------------------------
SirepoBlueskyClientException              Traceback (most recent call last)
Cell In [4], line 1
----> 1 data, schema = sb.auth("srw", "00000000")

File ~/src/mrakitin/SRW_Sirepo/sirepo-bluesky/sirepo_bluesky/sirepo_bluesky.py:76, in SirepoBluesky.auth(self, sim_type, sim_id)
     73 req["authHash"] = "v1:" + base64.urlsafe_b64encode(h.digest()).decode()
     75 self.cookies = None
---> 76 res = self._post_json("bluesky-auth", req)
     77 if not ("state" in res and res["state"] == "ok"):
     78     raise SirepoBlueskyClientException(f"bluesky_auth failed: {res}")

File ~/src/mrakitin/SRW_Sirepo/sirepo-bluesky/sirepo_bluesky/sirepo_bluesky.py:223, in SirepoBluesky._post_json(self, url, payload)
    221 def _post_json(self, url, payload):
    222     response = requests.post(f"{self.server}/{url}", json=payload, cookies=self.cookies)
--> 223     self._assert_success(response, url)
    224     if not self.cookies:
    225         self.cookies = response.cookies

File ~/src/mrakitin/SRW_Sirepo/sirepo-bluesky/sirepo_bluesky/sirepo_bluesky.py:219, in SirepoBluesky._assert_success(response, url)
    216 @staticmethod
    217 def _assert_success(response, url):
    218     if not response.status_code == requests.codes.ok:
--> 219         raise SirepoBlueskyClientException(f"{url} request failed, status: {response.status_code}")

SirepoBlueskyClientException: bluesky-auth request failed, status: 500

Server side:

/home/vagrant/.pyenv/versions/3.9.15/envs/py3/lib/python3.9/site-packages/sirepo/uri_router.py:325: RuntimeWarning: coroutine 'API.api_authBlueskyLogin' was never awaited

So I updated the code to use the new API.

[mrakitin]

@hyperrealist, please have a lot at this PR as well.

[mrakitin]

NSLS-II/start-sirepo-action#1 should be merged first, then tagged as v2, then I'll update the corresponding CI code to use the production version of the NSLS-II/start-sirepo-action@v2 action.

[thomaswmorris]

Looks good!