thelia | open source tool for creating e | Ecommerce library

Good morning, I want to make the same nginx vhost that can work with different php applications (symfony and Thelia). My problem is with the try_files instruction. In symfony the try_files must target app.php but in Thelia it must target index.php. So I wanted to modify the try_files statement as follows:

Thelia newbie here. I am simply trying to query a Category by its (English) URL. I can get a RewritingUrlQuery to find the correct rewriting_url row, but I can't figure out how to incorporate this into a CategoryQuery.

Here's what I have so far:

I have a pretty straightforward Dockerfile based on Thelia's and Composer's. I want it to do as much setup as possible, so to that end, I am installing composer in the PATH within the container and then trying to run composer install. However, at that point, it seems my local/mounted files don't exist within the container yet (see output from RUN echo pwd: ... below).

The build fails with this error message:

Composer could not find a composer.json file in /var/www/html

To initialize a project, please create a composer.json file as described in the https://getcomposer.org/ "Getting Started" section

ERROR: Service 'web' failed to build: The command '/bin/sh -c composer install' returned a non-zero code: 1

Note that building without the RUN composer install instruction and then running docker-compose exec web composer install works.

Does the mount declared in docker-compose.yml not take effect until the image has been completely built? Do I need to explicitly COPY my local files for them to be visible during the build process?