refactor: convert project to typescript (#47)

* refactor: convert project to typescript

* fix: image as last argument of docker run

* ci: remove example as the build can act as example

* fix: set tokenEnv to RENOVATE_TOKEN

* fix: add trailing single quite to Docker --env arguments

* fix: mount volume with config file to Docker container

* chore: remove Prettier trailingComma on all

This puts it back at the default, which is es5 style.

* fix: correct package main to dist/indes.js

* fix: use @actions/exec to execute docker child process

* fix: use async/await for exec

Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

* fix: use async/await in the runner

Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

src/renovate.ts

@@ -0,0 +1,55 @@
+import Docker from './docker';
+import { exec } from '@actions/exec';
+import fs from 'fs';
+import path from 'path';
+
+class Renovate {
+  private configFileEnv = 'RENOVATE_CONFIG_FILE';
+  private tokenEnv = 'RENOVATE_TOKEN';
+  private configFileMountDir = '/github-action';
+
+  private configFile: string;
+  private docker: Docker;
+
+  constructor(configFile: string, private token: string) {
+    this.configFile = path.resolve(configFile);
+
+    this.validateArguments();
+
+    this.docker = new Docker();
+  }
+
+  async runDockerContainer(): Promise<void> {
+    const commandArguments = [
+      '--rm',
+      `--env ${this.configFileEnv}=${this.configFileMountPath()}`,
+      `--env ${this.tokenEnv}=${this.token}`,
+      `--volume ${this.configFile}:${this.configFileMountPath()}`,
+      this.docker.image(),
+    ];
+    const command = `docker run ${commandArguments.join(' ')}`;
+
+    const code = await exec(command);
+    if (code !== 0) {
+      new Error(`'docker run' failed with exit code ${code}.`);
+    }
+  }
+
+  private validateArguments(): void {
+    if (!fs.existsSync(this.configFile)) {
+      throw new Error(
+        `Could not locate configuration file '${this.configFile}'.`
+      );
+    }
+  }
+
+  private configFileName(): string {
+    return path.basename(this.configFile);
+  }
+
+  private configFileMountPath(): string {
+    return path.join(this.configFileMountDir, this.configFileName());
+  }
+}
+
+export default Renovate;