build(docker): create Dockerfile

Dockerfile

@@ -0,0 +1,22 @@
+FROM node:22 as builder
+
+WORKDIR /app
+
+COPY . .
+
+RUN npm install -g bun
+
+RUN bun install && bun run build
+
+FROM golang:1.23-alpine
+
+WORKDIR /app
+
+COPY --from=builder . .
+
+RUN go mod tidy && go mod build -o app .
+
+ENV NOW_DOMAIN=""
+ENV NOW_DATA=""
+
+CMD ./app -domain $NOW_DOMAIN -data $NOW_DATA