Bring up to date

.editorconfig

@@ -0,0 +1,16 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 4
+
+[*.js]
+indent_size = 2
+
+[*.json]
+indent_size = 2
+
+[*.yml]
+indent_size = 2

.env.example

@@ -0,0 +1,8 @@
+BASE_PATH=./
+BUILD_ROOT_PATH=/app/
+PROJECT_NAME=dhii_stringable-interface
+
+PHP_BUILD_VERSION=7.1
+PHP_TEST_VERSION=7.1
+
+HOST_IP_ADDRESS=127.0.0.1

.gitattributes

@@ -7,3 +7,5 @@ nbproject export-ignore
 .gitignore export-ignore
 composer.lock export-ignore
 phpunit.xml export-ignore
+
+* text eol=lf

.github/workflows/continuous-integration.yml

@@ -0,0 +1,34 @@
+name: Continuous Integration
+on: [push, pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php-versions: ['7.1', '7.2', '7.3', '7.4', '8.0']
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-versions }}
+
+      - name: Analysing source code
+        run: find ./src/ ./inc/ ./tests/ -type f -name '*.php' -print0 | xargs -0 -L 1 -P 4 -- php -l
+
+      - name: Validate composer.json and composer.lock
+        run: composer validate
+
+      - name: Install dependencies
+        run: composer update --prefer-dist --no-progress
+
+      - name: PhpUnit
+        run: ./vendor/bin/phpunit
+
+      - name: Psalm
+        run: ./vendor/bin/psalm --show-info=false --threads=8 --diff
+
+      - name: PHPCS
+        run: ./vendor/bin/phpcs -s --report-source --runtime-set ignore_warnings_on_exit 1

.gitignore

@@ -1,4 +1,10 @@
 /vendor/
 /nbproject/private/
-/test/coverage/
-/test/log/
+/tests/coverage/
+/tests/log/
+/.idea/inspectionProfiles/
+/.idea/codeStyles/
+/.idea/workspace.xml
+/.phpunit.result.cache
+
+/.env