Migrate x-pack-kibana source to kibana

tasks/docker_docs.js

@@ -0,0 +1,41 @@
+import rimraf from 'rimraf';
+import { join } from 'path';
+import { execFileSync as exec } from 'child_process';
+
+export default function (grunt) {
+  grunt.registerTask('docker:docs', 'Build docs from docker', function () {
+    const rootPath = grunt.config.get('root');
+    const composePath = join(rootPath, 'tasks/docker_docs/docker-compose.yml');
+    const htmlDocsDir = join(rootPath, 'html_docs');
+
+    const env = Object.assign(process.env, {
+      KIBANA_DOCS_CONTAINER_NAME: 'kibana_docs',
+      KIBANA_DOCS_CONTEXT: rootPath
+    });
+    const stdio = [0, 1, 2];
+    const execOptions = { env, stdio };
+
+    exec('docker-compose', [
+      '-f', composePath,
+      'up'
+    ], execOptions);
+
+    const containerId = String(exec('docker-compose', [
+      '-f', composePath,
+      'ps',
+      '-q', env.KIBANA_DOCS_CONTAINER_NAME
+    ], { env })).trim();
+
+    grunt.log.write('Clearing old docs ... ');
+    rimraf.sync(htmlDocsDir);
+    grunt.log.writeln('done');
+
+    grunt.log.write('Copying new docs ... ');
+    exec('docker', [
+      'cp',
+      `${containerId}:/home/kibana/html_docs`,
+      htmlDocsDir
+    ]);
+    grunt.log.writeln('done');
+  });
+}