Source:

[Setup CodeIgniter — Devilbox 1.0 documentation](https://devilbox.readthedocs.io/en/latest/examples/setup-codeigniter.html?highlight=CodeIgniter)


Prerequisites: Have correct docker compose installed:
```bash
sudo apt install docker-compose-v2
```

Download Devilbox

Remove unwanted hosts from docker-compose.yml file

copy env file to .env

Set TLD_SUFFIX=local


In /etc/hosts, add 127.0.01 with application URL:

127.0.0.1 verleihapp.local


Start docker container: sudo docker compose up -d

Enter Container: ./shell.sh


Install CodeIgniter4 and create htdocs link:
```bash
mkdir myproject 
cd myproject 
composer create-project codeigniter4/appstarter myprojectapp 
ln -s myprojectapp/public htdocs
```

.env settings
```php

CI_ENVIRONMENT = development (instead of production)

app.baseURL = 'http://myproject.local'

database.default.hostname = myproject.local
database.default.database = myproject
database.default.username = root
database.default.password =
database.default.DBDriver = MySQLi
database.default.DBPrefix = 
database.default.port = 3306
```


Access mysql from inside container
```bash
./shell.sh

mysql -h 127.0.0.1 -u root

CREATE DATABASE TEST_DB;
```



https://shield.codeigniter.com/getting_started/install/