Added Github actions integration

Author: wouterj

.github/workflows/ci.yaml

@@ -43,6 +43,44 @@ jobs:
             -   name: "Build documentation"
                 run: make -C _build SPHINXOPTS="-nqW -j auto" html
 
+    build-php:
+        name: Symfony doc builder
+
+        runs-on: ubuntu-latest
+
+        continue-on-error: true
+
+        steps:
+            - name: "Checkout"
+              uses: actions/checkout@v2
+
+            - name: "Set-up PHP"
+              uses: shivammathur/setup-php@v2
+              with:
+                  php-version: 7.2
+                  coverage: none
+                  tools: "composer:v2"
+
+            - name: Get composer cache directory
+              id: composercache
+              working-directory: _build
+              run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+            - name: Cache dependencies
+              uses: actions/cache@v2
+              with:
+                  path: ${{ steps.composercache.outputs.dir }}
+                  key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+                  restore-keys: ${{ runner.os }}-composer-
+
+            - name: "Install dependencies"
+              working-directory: _build
+              run: composer install --prefer-dist
+
+            - name: "Build the docs"
+              working-directory: _build
+              run: php build.php -vvv
+
     doctor-rst:
         name: DOCtor-RST
 

_build/build.php

@@ -33,7 +33,8 @@
 
         $process = new Process($command);
         $process->setTimeout(3600);
-        $process->run();
+
+        $this->getHelper('process')->run($output, $process);
 
         if (!$process->isSuccessful()) {
             throw new ProcessFailedException($process);

_build/composer.json

@@ -1,5 +1,6 @@
 {
     "minimum-stability": "dev",
+    "prefer-stable": true,
     "repositories": [
         { "type": "git", "url": "https://github.com/weaverryan/docs-builder" }
     ],