fix: restore Docker deployment files after v0 regeneration

v0 bot regenerates the entire project without deployment files.
These are required for self-hosted deployment on Netcup.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Dockerfile

@@ -0,0 +1,46 @@
+FROM node:20-alpine AS base
+
+# Install pnpm
+RUN corepack enable && corepack prepare pnpm@latest --activate
+
+# Install dependencies only when needed
+FROM base AS deps
+RUN apk add --no-cache libc6-compat
+WORKDIR /app
+
+COPY package.json pnpm-lock.yaml ./
+RUN pnpm install --frozen-lockfile
+
+# Rebuild the source code only when needed
+FROM base AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+
+ENV NEXT_TELEMETRY_DISABLED=1
+ENV NODE_ENV=production
+
+RUN pnpm run build
+
+# Production image, copy all the files and run next
+FROM base AS runner
+WORKDIR /app
+
+ENV NODE_ENV=production
+ENV NEXT_TELEMETRY_DISABLED=1
+
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+
+COPY --from=builder /app/public ./public
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+
+USER nextjs
+
+EXPOSE 3000
+
+ENV PORT=3000
+ENV HOSTNAME="0.0.0.0"
+
+CMD ["node", "server.js"]

docker-compose.yml

@@ -0,0 +1,21 @@
+services:
+  ccg-website:
+    build: .
+    container_name: ccg-website
+    restart: unless-stopped
+    environment:
+      - NODE_ENV=production
+      - STRIPE_SECRET_KEY=${STRIPE_SECRET_KEY}
+      - STRIPE_WEBHOOK_SECRET=${STRIPE_WEBHOOK_SECRET}
+      - NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY=${NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY}
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.ccg.rule=Host(`cryptocommonsgather.ing`) || Host(`www.cryptocommonsgather.ing`)"
+      - "traefik.http.routers.ccg.entrypoints=web,websecure"
+      - "traefik.http.services.ccg.loadbalancer.server.port=3000"
+    networks:
+      - traefik-public
+
+networks:
+  traefik-public:
+    external: true