Improve README

CONTRIBUTING.md

@@ -0,0 +1,100 @@
+# Contributing
+
+## Run an instance
+
+> Due to how Telegram login works, setting up a development instance may be quite complicated.
+
+### Installing dependencies
+
+Dependencies are managed using [Yarn](https://yarnpkg.com/), and can be installed with:
+
+```console
+$ yarn install
+```
+
+### Setting up the environment
+
+The environment is loaded by the `.env.local` file in the root directory:
+
+```console
+$ cp .env.example .env.local
+$ edit .env.local
+```
+
+Additional "global" environment files can be configured via [the Next.js environment pipeline](https://nextjs.org/docs/basic-features/environment-variables):
+
+```console
+$ edit .env.production
+$ edit .env.development
+```
+
+The following sections will detail which variables to change depending on your setup.
+
+### Configuring the database
+
+A [PostgreSQL 14.3](https://www.postgresql.org/) database is required by the [Prisma](https://prisma.io/) to store data.
+
+The address of the server to use is specified via the `DATABASE_URL` environment variable.
+
+Since the project is in a prototyping phase, migrations have not been set up yet, therefore you can push the schema to the database using:
+
+```console
+$ yarn run db:push
+```
+
+Additionally, the TypeScript client can be generated with the following command:
+
+```console
+$ yarn run db:generate
+```
+
+[Visual Studio Code tasks](https://code.visualstudio.com/docs/editor/tasks) [are included](.vscode/tasks.json) to perform these operation from the editor.
+
+
+### Configuring Telegram Login
+
+To set up [Telegram Login](https://core.telegram.org/widgets/login), you'll first need to [create a bot](https://core.telegram.org/bots) on Telegram:
+
+```console
+$ open https://t.me/BotFather
+```
+
+Since Telegram Login [does not support non-standard ports](https://github.com/hprobotic/react-telegram-login#notes), you'll need a domain where the development instance of the website will be accessible at:
+
+```dns
+local.steffo.eu.        0       IN      A       192.168.1.135
+```
+
+> If you don't own a domain name, you can use your computer's [hosts file](https://en.wikipedia.org/wiki/Hosts_(file)) to configure a `HOSTNAME.localhost` domain.
+
+Your development server will also need to be reverse-proxied to be accessible at that domain, for example using [Caddy](https://caddyserver.com/)_
+
+```caddy
+local.steffo.eu:80 {
+    reverse_proxy "http://127.0.0.1:3000"
+}
+```
+
+Then, your Telegram bot needs to be configured to allow logins at your development domain, via the <kbd><kbd>BotFather</kbd> → <kbd>/mybots</kbd> → <kbd>@yourbot</kbd> → <kbd>Bot Settings</kbd> → <kbd>Domain</kbd></kbd> menu.
+
+Finally, the details of your bot should be added to the environment:
+- `TELEGRAM_TOKEN` should be set to the Telegram API token of your bot
+- `NEXT_PUBLIC_TELEGRAM_USERNAME` should be set to the Telegram username of your bot, without the `@`
+
+### Starting the development services
+
+You can start the development web server via the `app:dev` package script:
+
+```console
+$ yarn app:dev
+$ open http://local.steffo.eu/
+```
+
+Additionally, you can open the database explorer via the `db:studio` package script:
+
+```console
+$ yarn db:studio
+$ open http://127.0.0.1:5000/
+```
+
+[Visual Studio Code launchers](https://code.visualstudio.com/docs/editor/debugging) [are included](.vscode/launch.json) to launch the dev server, the debug browser, and the database explorer.

README.md

@@ -2,19 +2,4 @@
 
 A website for organizing events
 
-## Develop
-
-Run:
-
-```console
-$ yarn install
-$ edit .env.local
-$ yarn app:dev
-$ open http://local.steffo.eu
-```
-
-> Sadly `http://local.steffo.eu/` points to a 192.168.1.* address, which means you won't be able to login anyways unless you have that exact same address :|
-
-### Using Visual Studio Code
-
-Configure your `.env.local` file, then run the `Everything!` run configuration.
+\[ **[Contribution guide](CONTRIBUTING.md)** \]