add dockerfile

dockerfile

@@ -0,0 +1,55 @@
+# 1. Base Image
+FROM node:20-alpine AS base
+
+# Corepack aktivieren, um pnpm bereitzustellen (kein npm install -g pnpm nötig)
+RUN corepack enable && corepack prepare pnpm@latest --activate
+
+# 2. Dependencies Stage
+FROM base AS deps
+# libc6-compat wird oft für Alpine benötigt
+RUN apk add --no-cache libc6-compat
+WORKDIR /app
+
+# Kopiere package.json und pnpm-lock.yaml
+COPY package.json pnpm-lock.yaml ./
+
+# Installiere Abhängigkeiten mit pnpm
+RUN pnpm install --frozen-lockfile
+
+# 3. Builder Stage
+FROM base AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+
+# Telemetry deaktivieren (optional)
+ENV NEXT_TELEMETRY_DISABLED 1
+
+# Build ausführen
+RUN pnpm run build
+
+# 4. Runner Stage (Production Image)
+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
+
+# Kopiere Public Assets
+COPY --from=builder /app/public ./public
+
+# Kopiere Standalone Build (benötigt output: 'standalone' in next.config.js)
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+
+USER nextjs
+
+# WICHTIG: Port auf 7777 ändern
+EXPOSE 7777
+ENV PORT 7777
+ENV HOSTNAME "0.0.0.0"
+
+CMD ["node", "server.js"]