add docker image building

.github/workflows/build.yml

@@ -0,0 +1,40 @@
+name: Build Docker Image
+
+on:
+  push:
+    paths:
+      - build.sh
+      - .github/workflows/build.yml
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - arch: amd64
+          - arch: arm64
+    steps:
+      - name: Clone
+        uses: actions/checkout@v4
+
+      - name: Install Chisel
+        uses: shyim/chisel-installer@main
+
+      - name: Build image
+        run: ./build.sh ${{ matrix.arch }} --push
+  merge:
+    needs: [build]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Login into Github Docker Registery
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
+
+      - run: docker manifest create friendsofshopware/code-style:latest --amend friendsofshopware/code-style-amd64 --amend friendsofshopware/code-style-arm64
+
+      - run: docker manifest push friendsofshopware/code-style:latest

.gitignore

@@ -1,2 +1,4 @@
 vendor
 .php-cs-fixer.cache
+/db
+/rootfs

Dockerfile

@@ -0,0 +1,20 @@
+FROM --platform=$BUILDPLATFORM composer as download
+
+ADD . /cs-fix
+WORKDIR /cs-fix
+RUN composer install --no-dev --no-interaction --no-progress --no-suggest --optimize-autoloader
+RUN echo 'memory_limit = -1' > /php.ini
+
+FROM scratch
+
+LABEL org.opencontainers.image.authors="FriendsOfShopware" \
+      org.opencontainers.image.url="https://github.com/FriendsOfShopware/code-style" \
+      org.opencontainers.image.source="https://github.com/FriendsOfShopware/code-style" \
+      org.opencontainers.image.vendor="FriendsOfShopware" \
+      org.opencontainers.image.licenses="MIT" \
+      org.opencontainers.image.title="PHP-CS-Fixer"
+COPY rootfs/ /
+
+COPY --from=download /cs-fix /cs-fix
+COPY --from=download /php.ini /etc/php/8.2/cli/conf.d/99-memory-limit.ini
+ENTRYPOINT ["/usr/bin/php", "/cs-fix/bin/frosh-cs", "fix"]

build.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+set -eo pipefail
+
+arch=$1
+params=$2
+
+if [ -z "$arch" ]; then
+  echo "Usage: $0 <arch>"
+  exit 1
+fi
+
+echo "Building version $version"
+
+rm -rf rootfs
+mkdir rootfs
+
+if [[ ! -d db ]]; then
+  git clone -b ubuntu-23.10-php https://github.com/shyim/chisel-releases.git db
+fi
+
+chisel cut --arch=$arch --release ./db --root rootfs/ php8.2-cli_base php8.2-common_all-cli php8.2-common_phar-cli php8.2-mbstring_cli php8.2-xml_dom-cli dash_bins
+
+docker build --platform "linux/${arch}" -t "friendsofshopware/code-style:${version}-${arch}" .
+
+if [[ "$params" == "--push" ]]; then
+  docker push "friendsofshopware/code-style:${version}-${arch}"
+fi