fix: allow the project to complete the build in the docker

Author: soulteary

Dockerfile

@@ -1,10 +1,20 @@
 FROM alpine:3.15.0 as certs
 RUN apk --update add ca-certificates
 
+FROM golang:1.18.0-alpine3.15 AS builder
+RUN apk add git bash gcc musl-dev upx
+WORKDIR /app
+COPY . .
+RUN go mod tidy
+RUN go test -v ./...
+ENV CGO_ENABLED=0
+RUN GOARCH=amd64 go build -ldflags "-w -s" -v ./...
+RUN upx -9 -o grimd.minify grimd && mv grimd.minify grimd
+
 FROM scratch
 COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
-COPY grimd /usr/bin/grimd
-EXPOSE 53/udp
-EXPOSE 53/tcp
-EXPOSE 8080/tcp
+COPY --from=builder /app/grimd /usr/bin/grimd
+EXPOSE 53:53/udp
+EXPOSE 53:53/tcp
+EXPOSE 8080
 ENTRYPOINT ["/usr/bin/grimd"]