webdev/README.md

# Docker Development Environment Setup

This README provides instructions for setting up and using a Docker-based development environment with Apache, multiple PHP versions, and build tools.

## Table of Contents

1. [Prerequisites](#prerequisites)
2. [Directory Structure](#directory-structure)
3. [Setup Instructions](#setup-instructions)
4. [Managing Projects](#managing-projects)
5. [Switching PHP Versions](#switching-php-versions)
6. [Using the Build Tools Container](#using-the-build-tools-container)
7. [Using php-spy Profiler](#using-php-spy-profiler)
8. [Troubleshooting](#troubleshooting)

## Prerequisites

- Docker
- Docker Compose
- Git

## Directory Structure

```
.
├── apache/
│   ├── Dockerfile
│   ├── apache2.conf
│   ├── php-fpm.conf
│   └── vhosts/
├── php/
│   ├── Dockerfile-7.4
│   ├── Dockerfile-8.1
│   ├── Dockerfile-8.3
│   └── Dockerfile-8.4
├── build_tools/
│   └── Dockerfile
├── projects/
├── ssl/
└── docker-compose.yml
```

## Setup Instructions

1. Clone this repository:
   ```
   git clone <repository-url>
   cd <repository-directory>
   ```

3. Build and start the Docker environment:
   ```
   docker-compose up -d
   ```

4. Ensure your local machine's hosts file points `*.test` to `127.0.0.1`.

## Managing Projects

### Adding a New Project

1. Create a new folder in the `./projects` directory:
   ```
   mkdir -p ./projects/domainname.test/public_html ./projects/domainname.test/logs
   ```

2. Add a new virtual host configuration in `./apache/vhosts/`:
   ```apache
   <VirtualHost *:80>
       ServerName domainname.test
       DocumentRoot /var/www/domainname.test/public_html
       ErrorLog /var/www/domainname.test/logs/error.log
       CustomLog /var/www/domainname.test/logs/access.log combined
       
       <FilesMatch \.php$>
           SetHandler "proxy:fcgi://php74:9074"
       </FilesMatch>
   </VirtualHost>

   <VirtualHost *:443>
       ServerName domainname.test
       DocumentRoot /var/www/domainname.test/public_html
       ErrorLog /var/www/domainname.test/logs/error.log
       CustomLog /var/www/domainname.test/logs/access.log combined

       SSLEngine on
       SSLCertificateFile /etc/ssl/private/domainname.test.crt
       SSLCertificateKeyFile /etc/ssl/private/domainname.test.key
       
       <FilesMatch \.php$>
           SetHandler "proxy:fcgi://php74:9074"
       </FilesMatch>
   </VirtualHost>
   ```

3. Generate a self-signed SSL certificate:
   ```
   openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout ./ssl/domainname.test.key -out ./ssl/domainname.test.crt
   ```

4. Restart the Apache container:
   ```
   docker-compose restart apache
   ```

### Enabling a Project

Ensure the virtual host configuration file is present in `./apache/vhosts/` and restart the Apache container:
```
docker-compose restart apache
```

### Disabling a Project

1. Rename the virtual host configuration file in `./apache/vhosts/` to add a `.disabled` extension.
2. Restart the Apache container:
   ```
   docker-compose restart apache
   ```

### Removing a Project

1. Remove the project folder from `./projects/`.
2. Remove the virtual host configuration file from `./apache/vhosts/`.
3. Remove the SSL certificate files from `./ssl/`.
4. Restart the Apache container:
   ```
   docker-compose restart apache
   ```

## Switching PHP Versions

To switch PHP versions for a specific project:

1. Edit the virtual host configuration file in `./apache/vhosts/`:
   ```apache
   <FilesMatch \.php$>
       # Choose the appropriate PHP version:
       # For PHP 7.4 (default):
       SetHandler "proxy:fcgi://php74:9074"
       # For PHP 8.1:
       # SetHandler "proxy:fcgi://php81:9081"
       # For PHP 8.3:
       # SetHandler "proxy:fcgi://php83:9083"
       # For PHP 8.4:
       # SetHandler "proxy:fcgi://php84:9084"
   </FilesMatch>
   ```

2. Restart the Apache container:
   ```
   docker-compose restart apache
   ```

## Using the Build Tools Container

To access the build tools container via SSH:

```
ssh root@localhost -p 2222
```

The default password is 'password'. It's recommended to change this in a production environment.

When working with Node.js in the build tools container:

1. First, run: `source ~/.nvm/nvm.sh`
2. Then you can use Node.js and npm commands as usual.

## Using php-spy Profiler

To profile a PHP script using php-spy:

1. Connect to the appropriate PHP container:
   ```
   docker-compose exec php74 bash  # or php81, php83, php84
   ```

2. Run php-spy on a specific PHP process:
   ```
   phpspy -p [PID_OF_PHP_PROCESS]
   ```

   You can find the PID of the PHP process using `ps aux | grep php-fpm`.

## Troubleshooting

- If you encounter permission issues, ensure that your project directories and files have the correct ownership and permissions.
- If a site is not accessible, check that the virtual host configuration is correct and that the Apache container has been restarted.
- For SSL issues, verify that the SSL certificate files are correctly generated and placed in the `./ssl/` directory.
- If PHP processing is not working, ensure that the correct PHP version is specified in the virtual host configuration and that the corresponding PHP-FPM container is running.

For any other issues, check the Docker logs:
```
docker-compose logs
```

You can also check individual service logs, e.g.:
```
docker-compose logs apache
docker-compose logs php74
```