Added docker build to github workflow

.github/workflows/docker-main.yml

@@ -0,0 +1,42 @@
+name: Create and publish a Docker image
+
+on:
+  push:
+    branches: [main,'docker-setup']
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: ${{ env.REGISTRY }}/${{ ,,env.IMAGE_NAME }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@4a13e500e55cf31b7a5d59a38ab2040ab0f42f56
+        with:
+          context: .
+          file: docker/Dockerfile
+          push: true
+          tags: ${{ env.REGISTRY }}/${{ ,,env.IMAGE_NAME }}:latest
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/docker-release.yml

@@ -0,0 +1,41 @@
+name: Create and publish a Docker image
+
+on:
+  - "release"
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        with:
+          context: .
+          file: docker/Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.gitignore

@@ -1,3 +1,4 @@
+/.idea
 /.env
 /.php-cs-fixer.php
 /.phpunit.result.cache

README.md

@@ -37,6 +37,16 @@ projects. This tool does not only detect them, but also fixes them for you.
 
 ## Documentation
 
+### Run with docker
+You can take a ready built docker image to run ``php-cs-fixer``.
+```console
+docker run ghcr.io/elbformat/PHP-CS-Fixer/PHP-CS-Fixer:latest fix src
+```
+To use a custom config, just map it into the container
+```console
+docker run -v $(pwd)/.php-cs-fixer.dist.php:/var/www/.php-cs-fixer.php ghcr.io/PHP-CS-Fixer/PHP-CS-Fixer:latest fix src
+```
+
 ### Installation
 
 The recommended way to install PHP CS Fixer is to use [Composer](https://getcomposer.org/download/)

docker/Dockerfile

@@ -0,0 +1,14 @@
+# Install composer dependencies first
+FROM php:8.2-alpine as vendor
+WORKDIR /var/www
+COPY --from=composer/composer:2-bin /composer /usr/local/bin/composer
+COPY composer.json /var/www/composer.json
+RUN composer install --prefer-dist --no-dev --optimize-autoloader --no-scripts
+
+FROM php:8.2-alpine
+WORKDIR /var/www
+COPY src /var/www/src
+COPY php-cs-fixer /var/www/php-cs-fixer
+# Only take the dependencies (not composer itself) into the container
+COPY --from=vendor /var/www/vendor /var/www/vendor
+ENTRYPOINT ["/var/www/php-cs-fixer"]