Docker install with formerly-working config -> Recovery Mode

Installation
1

After a hardware failure, I migrated my docker-based (HA and other services all running under Docker) install to a new instance, but it’s coming up in “recovery mode” (never seen that before in 5+ years of running HA) and the log messages don’t give any useful information.

In fact, all they give on startup is this:

 The 'base_url' option is deprecated, please remove it from your configuration
2024-10-07 09:25:10.420 WARNING (SyncWorker_7) [homeassistant.helpers.config_validatio
n] The 'base_url' option is deprecated, please remove it from your configuration

… even after I purged all traces of base_url from configuration.yaml

I had a moderately-extensive HA setup that I am kind of hoping to not have to rebuild. Can anyone tell me how to get more useful debug info? This is pretty frustrating.

2

I managed to salvage the old Docker container, which apparently has HA 2023.8.1 (I had thought it was a little more recent) and now things are running again. I guess I’ll go through the release notes of newer releases and figure out what’s changed and how to fix it.

Love HA, hate HA’s release management. Ah well.
+j

3

Check that base_url wasn’t set in packages, or an included file.