add contribution guide

CONTRIBUTION.md

@@ -0,0 +1,28 @@
+# Contributing
+
+> "First, thanks for considering to contribute to my project. 
+  It really means a lot!" - [@andrasbacsai](https://github.com/andrasbacsai)
+
+You can ask for guidance anytime on our 
+[Discord server](https://coollabs.io/discord) in the `#contribution` channel.
+
+
+## 1) Setup your development environment
+
+- You need to have Docker Engine (or equivalent) [installed](https://docs.docker.com/engine/install/) on your system.
+- For better DX, install [Spin](https://serversideup.net/open-source/spin/).
+
+## 2) Set your environment variables
+
+- Copy [.env.development.example](./.env.development.example) to .env.
+- If necessary, set `USERID` & `GROUPID` accordingly (read in .env file).
+
+## 3) Start & setup Coolify
+
+- Run `spin up` - You can notice that errors will be thrown. Don't worry.
+- Run `./scripts/run setup:dev` - This will generate a secret key for you, delete any existing database layouts, migrate database to the new layout, and seed your database.
+
+## 4) Start development
+You can login your Coolify instance at `localhost:8000` with `test@example.com` and `password`.
+
+Your horizon (Laravel scheduler): `localhost:8000/horizon` - Only reachable if you logged in with root user.

scripts/run

@@ -20,6 +20,11 @@ function help {
     compgen -A function | cat -n
 }
 
+function setup:dev {
+    docker exec coolify bash -c "composer install"
+    docker exec coolify bash -c "php artisan key:generate"
+    docker exec coolify bash -c "php artisan migrate:fresh --seed"
+}
 function sync:v3 {
     if [ -z "$1" ]; then
         echo -e "Please provide a version.\n\nExample: run sync:v3 3.12.32"