npmci/readme.md

```markdown
# @ship.zone/npmci
node and docker in gitlab ci on steroids

## Install

To install `@ship.zone/npmci`, you can use npm or yarn:

```sh
# Using npm
npm install @ship.zone/npmci

# Using yarn
yarn add @ship.zone/npmci
```

## Usage

`npmci` is designed to streamline CI/CD processes, particularly in Docker and Node.js environments. The following sections illustrate its usage in various scenarios, from handling Node versions to building Docker images and more.

### 1. Handle Node Versions

One of the core features of `npmci` is managing Node versions in your CI environment. You can specify which version of Node to install:

```typescript
import { Npmci } from '@ship.zone/npmci';

async function manageNodeVersions() {
  const npmciInstance = new Npmci();
  await npmciInstance.start();

  await npmciInstance.nodejsManager.handleCli({
    _: ['node', 'install', 'stable'] // Installs the latest stable version
  });

  await npmciInstance.nodejsManager.handleCli({
    _: ['node', 'install', 'lts'] // Installs the Long-Term Support (LTS) version
  });

  await npmciInstance.nodejsManager.handleCli({
    _: ['node', 'install', 'legacy'] // Installs a legacy version
  });

  await npmciInstance.nodejsManager.handleCli({
    _: ['node', 'install', '14.17.0'] // Install a specific version of Node
  });
}

manageNodeVersions().then(() => console.log('Node versions managed successfully.'));
```

### 2. Handling npm and Yarn Tasks

`npmci` provides numerous utilities to streamline npm and yarn workflow tasks within a CI/CD pipeline.

```typescript
import { Npmci } from '@ship.zone/npmci';

async function manageNpmTasks() {
  const npmciInstance = new Npmci();
  await npmciInstance.start();

  await npmciInstance.npmManager.handleCli({ _: ['npm', 'install'] }); // Installs dependencies
  await npmciInstance.npmManager.handleCli({ _: ['npm', 'test'] }); // Runs tests
  await npmciInstance.npmManager.handleCli({ _: ['npm', 'publish'] }); // Publishes the package
}

manageNpmTasks().then(() => console.log('Npm tasks handled successfully.'));
```

### 3. Docker Task Handling

`npmci` simplifies Docker operations, particularly in building, testing, and publishing Docker images.

**Prepare Docker Environment:**

```typescript
import { Npmci } from '@ship.zone/npmci';

async function prepareDocker() {
  const npmciInstance = new Npmci();
  await npmciInstance.start();

  await npmciInstance.dockerManager.handleCli({ _: ['docker', 'prepare'] }); // Prepares Docker environment
}

prepareDocker().then(() => console.log('Docker environment prepared successfully.'));
```

**Building Docker Images:**

```typescript
import { Npmci } from '@ship.zone/npmci';

async function buildDockerImages() {
  const npmciInstance = new Npmci();
  await npmciInstance.start();

  await npmciInstance.dockerManager.handleCli({ _: ['docker', 'build'] }); // Builds Docker images
}

buildDockerImages().then(() => console.log('Docker images built successfully.'));
```

**Testing Docker Images:**

```typescript
import { Npmci } from '@ship.zone/npmci';

async function testDockerImages() {
  const npmciInstance = new Npmci();
  await npmciInstance.start();

  await npmciInstance.dockerManager.handleCli({ _: ['docker', 'test'] }); // Tests Docker images
}

testDockerImages().then(() => console.log('Docker images tested successfully.'));
```

**Publishing Docker Images:**

```typescript
import { Npmci } from '@ship.zone/npmci';

async function pushDockerImages() {
  const npmciInstance = new Npmci();
  await npmciInstance.start();

  await npmciInstance.dockerManager.handleCli({ _: ['docker', 'push'] }); // Pushes Docker images to registry
}

pushDockerImages().then(() => console.log('Docker images pushed successfully.'));
```

### 4. Managing Docker Registries

`npmci` can handle multiple Docker registries and allows for easy integration within your CI pipeline.

**Logging in to Docker Registries:**

```typescript
import { Npmci } from '@ship.zone/npmci';

async function loginToDockerRegistries() {
  const npmciInstance = new Npmci();
  await npmciInstance.start();

  await npmciInstance.dockerManager.handleCli({ _: ['docker', 'login'] }); // Logs into all configured Docker registries
}

loginToDockerRegistries().then(() => console.log('Logged into Docker registries.'));
```

**Pulling Docker Images:**

```typescript
import { Npmci } from '@ship.zone/npmci';

async function pullDockerImages() {
  const npmciInstance = new Npmci();
  await npmciInstance.start();

  await npmciInstance.dockerManager.handleCli({ _: ['docker', 'pull', 'registry.gitlab.com/mygroup/myrepo'] }); // Pulls Docker images from a registry
}

pullDockerImages().then(() => console.log('Docker images pulled successfully.'));
```

### 5. SSH Key Management

`npmci` also simplifies the management of SSH keys, which is crucial for accessing private repositories and servers.

**Preparing SSH Keys:**

```typescript
import { Npmci } from '@ship.zone/npmci';

async function prepareSshKeys() {
  const npmciInstance = new Npmci();
  await npmciInstance.start();

  await npmciInstance.sshManager.handleCli({ _: ['ssh', 'prepare'] }); // Prepares SSH keys from environment variables
}

prepareSshKeys().then(() => console.log('SSH keys prepared successfully.'));
```

### 6. Cloudron Integration

For users deploying applications on Cloudron, `npmci` provides a set of utilities for automating Cloudron tasks.

**Deploying to Cloudron:**

```typescript
import { Npmci } from '@ship.zone/npmci';

async function deployToCloudron() {
  const npmciInstance = new Npmci();
  await npmciInstance.start();

  await npmciInstance.cloudronManager.handleCli({
    _: ['cloudron', 'deploy']
  }); // Deploys application to Cloudron platform
}

deployToCloudron().then(() => console.log('Deployment to Cloudron completed.'));
```

**Preparing Cloudron Manifest:**
Before deployment, replace version placeholders in the Cloudron Manifest:

```typescript
import { Npmci } from '@ship.zone/npmci';
import * as fs from 'fs';
import * as path from 'path';

async function prepareCloudronManifest(version: string) {
  const manifestPath = path.join(process.cwd(), "CloudronManifest.json");
  let manifestFile = fs.readFileSync(manifestPath, { encoding: 'utf-8' });
  manifestFile = manifestFile.replace(/##version##/g, version);
  fs.writeFileSync(manifestPath, manifestFile);
  console.log('CloudronManifest prepared');
}

async function deployWithPreparedManifest() {
  const npmciInstance = new Npmci();
  await npmciInstance.start();
  
  await prepareCloudronManifest('1.0.0');
  await npmciInstance.cloudronManager.handleCli({
    _: ['cloudron', 'deploy']
  }); // Deploys application to Cloudron platform
}

deployWithPreparedManifest().then(() => console.log('Deployment to Cloudron with manifest preparation completed.'));
```

### 7. Webhook Triggers

`npmci` supports webhook triggers, allowing you to trigger builds and other activities based on various conditions.

**Triggering Webhooks:**

```typescript
import { Npmci } from '@ship.zone/npmci';

async function triggerWebhooks() {
  const npmciInstance = new Npmci();
  await npmciInstance.start();

  await npmciInstance.triggerManager.handleCli({
    _: ['trigger']
  }); // Triggers webhooks based on environment variables
}

triggerWebhooks().then(() => console.log('Webhooks triggered successfully.'));
```

### 8. Using the bash Helper

`npmci` includes a bash helper for executing commands within a bash shell, useful for various custom tasks.

**Using bash to Execute Commands:**

```typescript
import { bash } from '@ship.zone/npmci';

async function runCustomBashCommand(command: string) {
  const output = await bash(command);
  console.log('Command output:', output);
}

runCustomBashCommand('echo Hello World').then(() => console.log('Custom command executed successfully.'));
```

### 9. Example CI Configuration

An example of integrating `npmci` into a GitLab CI configuration might look like this:

```yaml
image: hosttoday/ht-docker-node:npmci

stages:
  - prepare
  - build
  - test
  - deploy

default:
  before_script:
    - npmci node install stable
    - npmci npm install

prepare:
  stage: prepare
  script:
    - npmci prepare npm
    - npmci prepare docker

build:
  stage: build
  script:
    - npmci docker build

test:
  stage: test
  script:
    - npmci npm test

deploy:
  stage: deploy
  script:
    - npmci publish npm
    - npmci docker push
    - npmci cloudron deploy
  
  environment:
    name: production
    url: http://example.com
```

This example YAML file configures stages for preparing the environment, building the project, running tests, and deploying the project. `npmci` commands are used throughout to handle various tasks.

## Full Features and Use Cases

Below is a comprehensive set of features and use cases supported by `npmci`. This section ensures you can take full advantage of the library's capabilities in multiple scenarios.

### Comprehensive Docker Workflow

**Step-by-step Docker Image Handling:**

1. **Detect and Build All Dockerfiles:**

   ```typescript
   import { Npmci } from '@ship.zone/npmci';

   async function detectAndBuildDockerfiles() {
     const npmciInstance = new Npmci();
     await npmciInstance.start();
     const dockerfiles = await npmciInstance.dockerManager.getDockerfiles();
     console.log('Dockerfiles detected:', dockerfiles.map(d => d.filePath));
     
     await npmciInstance.dockerManager.handleCli({ _: ['docker', 'build'] });
     console.log('Dockerfiles built successfully.');
   }

   detectAndBuildDockerfiles().then(() => console.log('Docker detection and build process completed.'));
   ```

2. **Test All Dockerfiles:**

   ```typescript
   import { Npmci } from '@ship.zone/npmci';

   async function testAllDockerfiles() {
     const npmciInstance = new Npmci();
     await npmciInstance.start();
     await npmciInstance.dockerManager.handleCli({ _: ['docker', 'test'] });
     console.log('Dockerfiles tested successfully.');
   }

   testAllDockerfiles().then(() => console.log('Docker testing process completed.'));
   ```

3. **Push Dockerfiles to a Registry:**

   ```typescript
   import { Npmci } from '@ship.zone/npmci';

   async function pushDockerfilesToRegistry() {
     const npmciInstance = new Npmci();
     await npmciInstance.start();
     
     await npmciInstance.dockerManager.handleCli({ _: ['docker', 'push'] });
     console.log('Dockerfiles pushed to registry successfully.');
   }

   pushDockerfilesToRegistry().then(() => console.log('Docker push process completed.'));
   ```

**Dockerfile Class Example:**

Here's a snippet showcasing how the `Dockerfile` class can be used to handle Dockerfile-specific operations:

```typescript
import { Dockerfile } from '@ship.zone/npmci';

async function handleDockerfileOperations() {
  // Initialize Dockerfile instances
  const dockerfile1 = new Dockerfile(/* required parameters */);
  const dockerfile2 = new Dockerfile(/* required parameters */);

  // Read and sort Dockerfiles
  const dockerfiles = await Dockerfile.readDockerfiles(/* required parameters */);
  const sortedDockerfiles = await Dockerfile.sortDockerfiles(dockerfiles);

  // Build and Test Dockerfiles
  await Dockerfile.buildDockerfiles(sortedDockerfiles);
  await Dockerfile.testDockerfiles(sortedDockerfiles);

  // Push Dockerfile images to a registry
  for (const dockerfile of sortedDockerfiles) {
    await dockerfile.push(/* registry and tag parameters */);
  }

  console.log('Dockerfile operations completed successfully.');
}

handleDockerfileOperations().then(() => console.log('Dockerfile processing flow completed.'));
```

This completes the comprehensive guide to `@ship.zone/npmci`. With the examples and explanations provided, you should be able to harness the full power and flexibility of the library to streamline your CI/CD processes effectively.
```
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