Update reference to index_dev.php on developer mode section

[RCheesley]

There's an outdated reference here:

https://contribute.mautic.org/contributing-to-mautic/tester?_gl=1*1in3zx3*_ga*NDQ4MTgzODAxLjE3MDY2MjAyNjQ.*_ga_ZRB8436CFL*MTcwNjcwMTE5MS43LjEuMTcwNjcwMTI3NC4zOC4wLjA.#using-developer-mode

This should refer to the .env file now.

[RCheesley]

https://devdocs.mautic.org/en/5.x/development-environment/environments.html I think maybe we should centralise the information here, to avoid duplication?

[amanreddy77]

hi @RCheesley can you explain me this issue in detail so that I will start working on this

[RCheesley]

Hi @amanreddy77 sure thing!

1. We no longer have an index_dev.php, it was removed and we now use the environment file. You can read more about that in the link I shared, https://devdocs.mautic.org/en/5.x/development-environment/environments.html.

2. We need to remove the references to index_dev.php which are on the Community Handbook (see https://github.com/search?q=repo%3Amautic%2Fmautic-community-handbook%20%22index_dev.php%22&type=code) and instead, explain about the environment file

3. I wonder if we actually remove the section about setting up Mautic locally in the tester page, and instead direct them to the developer docs where we have that info written already? Reason being, is that now we have to maintain two sources of truth which is quite error prone. What do you think? Here's how to set up locally with DDEV: https://devdocs.mautic.org/en/5.x/development-environment/how_to_install_with_ddev.html and here's how to set up locally with an existing AMP stack: https://devdocs.mautic.org/en/5.x/development-environment/setup.html.