Some of the prepopulate scripts depend on having the variable set, but at the moment we're not storing it in the config because it's not the final URL.
This passes through a variable from codespaces secrets to the docker container, and to the php config, which lets the prebuild process gather all the data needed.
(In principle the url will then be available through the prebuild - but as it's not secret secret this is fine)
Some of the prepopulate scripts depend on having the variable set, but at the moment we're not storing it in the config because it's not the final URL.
This passes through a variable from codespaces secrets to the docker container, and to the php config, which lets the prebuild process gather all the data needed.
(In principle the url will then be available through the prebuild - but as it's not secret secret this is fine)