ci: add codespace image

.devcontainer/Dockerfile

@@ -0,0 +1,55 @@
+FROM cgr.dev/chainguard/wolfi-base
+
+RUN <<EOF
+    set -eo pipefail
+
+apk add --no-cache \
+    libstdc++ \
+    sudo-rs \
+    nodejs-21 \
+    curl \
+    npm \
+    go \
+    golangci-lint \
+    openssh \
+    openssh-keygen \
+    openssh-client \
+    git \
+    git-lfs \
+    composer \
+    php-8.2 \
+    php-8.2-fileinfo \
+    php-8.2-openssl \
+    php-8.2-ftp \
+    php-8.2-ctype \
+    php-8.2-xml \
+    php-8.2-dom \
+    php-8.2-simplexml \
+    php-8.2-xmlreader \
+    php-8.2-xmlwriter \
+    php-8.2-bcmath \
+    php-8.2-iconv \
+    php-8.2-gd \
+    php-8.2-intl \
+    php-8.2-pdo \
+    php-8.2-pdo_mysql \
+    php-8.2-mysqlnd \
+    php-8.2-pcntl \
+    php-8.2-sockets \
+    php-8.2-bz2 \
+    php-8.2-gmp \
+    php-8.2-soap \
+    php-8.2-zip \
+    php-8.2-redis \
+    php-8.2-opcache \
+    php-8.2-amqp
+
+# Refresh ldconfig cache
+ldconfig
+echo '%gitpod ALL=(ALL) NOPASSWD: ALL' >> /etc/sudoers
+addgroup -g 33333 gitpod
+adduser -u 33333 -G gitpod -h /home/gitpod -s /bin/bash -D gitpod
+EOF
+
+USER gitpod
+

.github/workflows/codespace.yml

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+name: Codespaces
+
+on:
+    push:
+        branches:
+            - main
+        paths:
+            - .devcontainer/Dockerfile
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v4
+
+            - name: Login into Github Docker Registry
+              run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
+
+            - name: Set up Docker Buildx
+              uses: docker/setup-buildx-action@v3
+
+            - name: Set up QEMU
+              uses: docker/setup-qemu-action@v3
+
+            - name: Build and push
+              uses: docker/build-push-action@v5
+              with:
+                context: .devcontainer
+                push: true
+                platforms: linux/amd64,linux/arm64
+                tags: "ghcr.io/friendsofshopware/shopware-cli-codespace"
+                provenance: false