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/docker.ts

@@ -0,0 +1,15 @@
+class Docker {
+  readonly repository = 'renovate/renovate';
+  // renovate: datasource=docker depName=renovate/renovate versioning=docker
+  readonly tag = '19.228.1';
+
+  image(): string {
+    return `${this.repository}:${this.tag}`;
+  }
+
+  version(): string {
+    return this.tag;
+  }
+}
+
+export default Docker;