Dockerfile

# Builder Image
# ---------------------------------------------------
FROM golang:1.25-alpine AS go-builder

ARG VERSION=dev \
    COMMIT=none

WORKDIR /usr/src/app

COPY . ./

RUN go mod download \
    && CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w -X main.version=${VERSION} -X main.commit=${COMMIT}" -trimpath -a -o main .


# Final Image
# ---------------------------------------------------
FROM dimaskiddo/alpine:base-glibc
MAINTAINER Dimas Restu Hidayanto <dimas.restu@student.upi.edu>

ARG SERVICE_NAME="dns-proxy"

ENV PATH $PATH:/usr/app/${SERVICE_NAME}

WORKDIR /usr/app/${SERVICE_NAME}

RUN apk --no-cache --update upgrade

COPY --from=go-builder /usr/src/app/main ./dns-proxy
COPY --from=go-builder /usr/src/app/dns-proxy.yaml.example ./dns-proxy.yaml

CMD ["dns-proxy", "-config", "./dns-proxy.yaml"]