Devcontainer postgresql (#6590)

* Working on devcontainer with postgresql

* Fix for docker-compose.yml

* Update postCreateCommand

* Tweak docker compose file

* Fix Dockerfile

- Do not use uv (breaks process)

* Update postCreateCommand.sh

- Skip database backup

* Tweak file

* Further improvements

- Remove 'devcontainer' Dockerfile target
- Fix postCreateCommand

* Further cleanup

* Reduce SQL errors

- Use filter().exists() rather than get()

* Set default SITE_URL

* Docs updates

* Fix hard-coded django version

* Update faq.md

* Typo fix: PluginObject -> PluginConfig

* Docs: strict mode

* docs: fix link

* docs: fix typo

* Fix error message

* Revert change to config_template default

docs/mkdocs.yml

@@ -77,7 +77,6 @@ nav:
       - Terminology: concepts/terminology.md
       - Physical Units: concepts/units.md
     - Development:
-      - Getting started: develop/starting.md
       - Contributing: develop/contributing.md
       - Devcontainer: develop/devcontainer.md
       - React Frontend: develop/react-frontend.md