FROM golang:1.22.1-alpine AS build

WORKDIR /src
COPY src /src
RUN \
  go mod download && \
  CGO_ENABLED=0 GOOS=linux go build -a -o /dnsproxy cmd/main.go


FROM alpine:latest

RUN \
  apk --update upgrade && \
  apk add unbound bind-tools tini && \
  wget -O /etc/unbound/named.cache ftp://ftp.internic.net//domain/named.cache

COPY rootfs /
COPY --from=build /dnsproxy /app/

HEALTHCHECK --interval=30s --start-period=5s --timeout=10s \
  CMD /usr/bin/host -T -p 1053 asperti.com 127.0.0.1

ENTRYPOINT ["/sbin/tini", "--", "/bin/sh", "/app/entrypoint.sh"]