Create Docker Test Infrastructure

[josecelano]

Parent Issue: #113 - Create Dependency Installation Package for E2E Tests
Depends On: #115 - Create CLI Binary with Check Command (Issue 1-1-2)
Epic: #112 - Refactor and Improve E2E Test Execution

Overview

Create Docker-based testing infrastructure to verify the CLI binary works correctly in a clean Ubuntu environment. This ensures the binary can detect missing dependencies and provides confidence before implementing installation logic.

This is Phase 3 of 4 for building the dependency installation package.

Objectives

• Create Dockerfile based on ubuntu:24.04
• Set up container helpers for file operations
• Write Docker-based tests for the CLI binary
• Test detection of missing and installed tools
• Verify exit codes and error messages

Key Components

Dockerfile:

• Base: ubuntu:24.04
• Installs: build-essential, curl
• Does NOT install: cargo-machete, OpenTofu, Ansible, LXD (tests detection of missing deps)

Container Helpers:

• Copy existing helpers from src/testing/e2e/containers/
• copy_file_to_container() - Copy binary to container
• Container startup and cleanup utilities

Tests:

• Test binary detects missing dependencies correctly
• Test binary reports installed dependencies correctly
• Verify exit codes (0 for all present, 1 for missing deps)

Acceptance Criteria

• Pre-commit checks pass
• Dockerfile builds successfully
• Docker tests run and pass
• CLI binary correctly detects missing tools
• Exit codes are correct in all scenarios
• Tests are documented and maintainable

Time Estimate

2-3 hours

Related Documentation

• Full specification: docs/issues/116-1-1-3-create-docker-test-infrastructure.md
• Issue 1-1-2: CLI binary being tested