fea: add Dockerfile

Dockerfile

@@ -0,0 +1,12 @@
+FROM alpine:3.14 as builder
+
+RUN apk --no-cache add ca-certificates
+
+FROM scratch as production
+
+ENV TZ="Asia/Shanghai"
+
+COPY ./app /
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+
+CMD ["/app"]