Added docker file for building app

Dockerfile

@@ -0,0 +1,24 @@
+FROM node:18-alpine AS builder
+
+# Enable corepack and install pnpm
+RUN corepack enable && corepack prepare pnpm@latest --activate
+
+# Disable interactive prompts
+ENV CI=true
+
+WORKDIR /app
+COPY . .
+
+# Install dependencies and build
+RUN pnpm install && pnpm build
+
+FROM node:18-alpine AS runner
+
+RUN corepack enable && corepack prepare pnpm@latest --activate
+
+WORKDIR /app
+COPY --from=builder /app ./
+
+EXPOSE 3000
+
+CMD ["pnpm", "start"]