Add Docker development environment

Multistage Dockerfile (WooCommerce download, wp-bootstrap npm build,
Composer deps, WordPress runtime), Compose stack with MariaDB, and
auto-setup entrypoint that installs WordPress and activates the theme
on first boot.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker/Dockerfile

@@ -0,0 +1,70 @@
+###############################################################################
+# Stage 1 — Download WooCommerce from WordPress.org
+###############################################################################
+FROM alpine:3.21 AS woocommerce
+
+RUN apk add --no-cache curl unzip jq
+
+ARG WOOCOMMERCE_VERSION=latest
+RUN set -ex; \
+    if [ "$WOOCOMMERCE_VERSION" = "latest" ]; then \
+      URL=$(curl -sSf "https://api.wordpress.org/plugins/info/1.2/?action=plugin_information&slug=woocommerce" \
+            | jq -r '.download_link'); \
+    else \
+      URL="https://downloads.wordpress.org/plugin/woocommerce.${WOOCOMMERCE_VERSION}.zip"; \
+    fi; \
+    curl -sSfL -o /tmp/woocommerce.zip "$URL"; \
+    unzip -q /tmp/woocommerce.zip -d /tmp/plugins; \
+    rm /tmp/woocommerce.zip
+
+
+###############################################################################
+# Stage 2 — Build wp-bootstrap theme assets
+###############################################################################
+FROM node:20-alpine AS wp-bootstrap-assets
+
+COPY --from=wp-bootstrap . /build
+WORKDIR /build
+RUN npm ci && npm run build \
+    && rm -rf node_modules src .git .gitea .github .vscode .claude .idea \
+       CLAUDE.md PLAN.md package.json package-lock.json .editorconfig \
+       releases .gitignore
+
+
+###############################################################################
+# Stage 3 — Install Composer dependencies for both themes
+###############################################################################
+FROM composer:2 AS composer
+
+COPY --from=wp-bootstrap-assets /build /themes/wp-bootstrap
+WORKDIR /themes/wp-bootstrap
+RUN composer install --no-dev --optimize-autoloader --no-interaction
+
+COPY . /themes/wc-bootstrap
+WORKDIR /themes/wc-bootstrap
+RUN composer install --no-dev --optimize-autoloader --no-interaction
+
+
+###############################################################################
+# Stage 4 — Final WordPress image
+###############################################################################
+FROM wordpress:6.9.1-php8.4-apache AS wp_runtime
+
+RUN curl -sSfL -o /usr/local/bin/wp \
+      https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar \
+    && chmod +x /usr/local/bin/wp
+
+COPY --from=woocommerce /tmp/plugins/woocommerce \
+     /var/www/html/wp-content/plugins/woocommerce
+
+COPY --from=composer /themes/wp-bootstrap \
+     /var/www/html/wp-content/themes/wp-bootstrap
+
+COPY --from=composer /themes/wc-bootstrap \
+     /var/www/html/wp-content/themes/wc-bootstrap
+
+COPY --link --chmod=0755 docker/setup.sh /usr/local/bin/setup.sh
+COPY --link --chmod=0755 docker/entrypoint.sh /usr/local/bin/wc-entrypoint.sh
+
+ENTRYPOINT ["wc-entrypoint.sh"]
+CMD ["apache2-foreground"]