refactor: restructure as Rust application with main and E2E test binaries

- Move Rust project to root directory as main application
- Create main binary that displays usage instructions
- Move E2E test functionality to separate e2e-tests binary
- Update project structure and README to reflect new organization
- Add default-run configuration to Cargo.toml for main binary
- Remove old tests subdirectory structure
- Update .gitignore for root-level Rust artifacts

The application now provides:
- Main binary: Usage instructions and getting started guide
- E2E tests binary: Automated infrastructure testing with wait-cloud-init test
- Both binaries tested and working correctly (E2E test passed in ~22s)

Author: josecelano

.gitignore

@@ -46,3 +46,7 @@ Thumbs.db
 # Temporary files
 *.tmp
 *.temp
+
+# Rust build artifacts
+target/
+Cargo.lock

Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "torrust-testing-infra"
+version = "0.1.0"
+edition = "2021"
+description = "Torrust Testing Infrastructure with Ansible and OpenTofu"
+license = "MIT"
+default-run = "torrust-testing-infra"
+[[bin]]
+name = "torrust-testing-infra"
+path = "src/main.rs"
+[[bin]]
+name = "e2e-tests"
+path = "src/bin/e2e_tests.rs"
+[dependencies]
+tokio = { version = "1.0", features = ["full"] }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+anyhow = "1.0"
+clap = { version = "4.0", features = ["derive"] }
+regex = "1.0"
+dirs = "5.0"

README.md

@@ -1,6 +1,6 @@
-# Torrust Testing Infrastructure PoC
+# Torrust Testing Infrastructure
 
-This repository contains configurations for testing VM provisioning and cloud-init execution using different virtualization approaches. The goal is to find the best solution for creating VMs that support cloud-init both locally (development) and in CI environments (GitHub Actions).
+This Rust application provides automated testing infrastructure for Torrust projects. It manages VM provisioning and cloud-init execution using different virtualization approaches, with the goal of finding the best solution for creating VMs that support cloud-init both locally (development) and in CI environments (GitHub Actions).
 
 ## 🎯 Project Goals
 
@@ -48,11 +48,13 @@ This repository tests two different virtualization technologies:
 
 ### Prerequisites
 
+This is a Rust application that automates testing infrastructure deployment using OpenTofu and Ansible.
+
 Install the required tools:
 
 ```bash
 # Check installations
-lxd version && tofu version && ansible --version
+lxd version && tofu version && ansible --version && cargo --version
 ```
 
 **Missing tools?** See detailed installation guides:
@@ -63,6 +65,9 @@ lxd version && tofu version && ansible --version
 **Quick install:**
 
 ```bash
+# Install Rust (if not already installed)
+curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
+
 # Install LXD
 sudo snap install lxd && sudo lxd init --auto && sudo usermod -a -G lxd $USER && newgrp lxd
 
@@ -73,7 +78,42 @@ curl -fsSL https://get.opentofu.org/install-opentofu.sh | sudo bash
 sudo apt install ansible
 ```
 
-### Deployment Steps
+### Usage
+
+#### Main Application
+
+The main application provides usage instructions:
+
+```bash
+# Build and run the application
+cargo run
+
+# Or install and run directly
+cargo install --path .
+torrust-testing-infra
+```
+
+#### Running E2E Tests
+
+Use the E2E tests binary to run automated infrastructure tests:
+
+```bash
+# Run the wait-cloud-init test
+cargo run --bin e2e-tests -- wait-cloud-init
+
+# Keep the test environment after completion
+cargo run --bin e2e-tests -- wait-cloud-init --keep
+
+# Run with verbose output
+cargo run --bin e2e-tests -- wait-cloud-init --verbose
+
+# See all available options
+cargo run --bin e2e-tests -- --help
+```
+
+### Manual Deployment Steps
+
+If you prefer manual deployment instead of using the E2E tests:
 
 #### 1. Deploy Infrastructure
 
@@ -172,6 +212,10 @@ Both configurations include GitHub Actions workflows for CI testing:
 ## 📁 Repository Structure
 
 ```text
+├── src/                      # Rust application source code
+│   ├── main.rs              # Main application binary
+│   └── bin/
+│       └── e2e_tests.rs     # E2E tests binary
 ├── docs/                     # Detailed documentation
 │   ├── opentofu.md          # OpenTofu setup and usage guide
 │   ├── ansible.md           # Ansible setup and usage guide
@@ -182,7 +226,9 @@ Both configurations include GitHub Actions workflows for CI testing:
 │   │   └── lxd/             # LXD container configuration
 │   └── ansible/             # Ansible configuration management
 ├── .github/workflows/       # CI/CD workflows
+├── Cargo.toml              # Rust project configuration
 ├── README.md               # This file - project overview
+├── target/                 # Rust build artifacts (ignored)
 └── .gitignore              # Git ignore rules
 ```
 

config/ansible/inventory.yml

@@ -32,7 +32,7 @@ all:
       # 🔗 OPENTOFU: IP assigned by lxd_instance.torrust_vm via lxdbr0 network
       # 🔗 DISCOVERY: Find current IP with: lxc list torrust-vm
       # 🔗 AUTOMATION: Could be retrieved via: lxc list torrust-vm -f json | jq -r '.[0].state.network.eth0.addresses[0].address'
-      ansible_host: 10.140.190.177
+      ansible_host: 10.140.190.84
 
       # The username to use when connecting via SSH
       # 🔗 CLOUD-INIT: This must match the user created in cloud-init

project-words.txt

@@ -4,6 +4,7 @@ containerd
 cpus
 dearmor
 debootstrap
+ehthumbs
 eprintln
 getent
 journalctl
@@ -21,6 +22,7 @@ runcmd
 serde
 subshell
 sysfs
+terraformrc
 tfstate
 tfvars
 tlsv