Eu não uso esses plugins:
2 │ discourse_plugins:
3 │ - https://github.com/discourse/docker_manager
4 │ - https://github.com/discourse/discourse-rss-polling
5 │ - https://github.com/discourse/discourse-chat-integration
6 │ - https://github.com/discourse/discourse-yearly-review
7 │ - https://github.com/discourse/discourse-perspective-api
8 │ - https://github.com/discourse/discourse-policy
9 │ - https://github.com/discourse/discourse-shared-edits
10 │ - https://github.com/discourse/discourse-akismet
11 │ - https://github.com/discourse/discourse-solved
12 │ - https://github.com/discourse/discourse-user-notes
13 │ - https://github.com/discourse/discourse-templates
14 │ - https://github.com/discourse/discourse-assign
15 │ - https://github.com/discourse/discourse-docs
16 │ - https://github.com/discourse/discourse-encrypt
17 │ - https://github.com/discourse/discourse-cakeday
18 │ - https://github.com/discourse/discourse-calendar
19 _ │ - https://github.com/discourse/discourse-data-explorer
20 │ - https://github.com/kees-closed/discourse-group-custom-fields
21 │ - https://github.com/discourse/discourse-activity-pub
Eu uso MaxMind, então talvez esse possa ser o problema. Eu também comentei o plugin não-Discourse. Isso não resolveu o problema, então não acho que seja devido a um plugin não oficial.
Eu também reiniciei o host do contêiner, sem efeito no resultado da compilação. No passado, um problema de rede foi resolvido por uma reinicialização.