Initial commit: Saleor Core Extensions app with order email notifications

Dockerfile

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+FROM node:22-alpine AS builder
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm install -g pnpm && pnpm install --frozen-lockfile
+
+COPY . .
+RUN pnpm generate
+RUN pnpm build
+
+FROM node:22-alpine AS runner
+
+WORKDIR /app
+
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/public ./public
+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"]