adjust docker file

Author: sfxworks

Dockerfile

@@ -1,15 +1,15 @@
-############################
-# STEP 1 build executable binary
-############################
-FROM golang:1.19 AS builder
-WORKDIR $GOPATH/src/mypackage/myapp/
+FROM golang:1.19 as build
+
+WORKDIR /go/src/app
 COPY . .
-RUN GOOS=linux go build -ldflags="-s -w" -gcflags "all=-trimpath=$(pwd)" -o /go/bin/kuber -v kuber.go
-############################
-# STEP 2 build a small image
-############################
-FROM scratch
-# Copy our static executable.
-COPY --from=builder /go/bin/kuber /go/bin/kuber
-# Run the hello binary.
-ENTRYPOINT ["/go/bin/kuber"]
+
+RUN go mod download
+RUN go vet -v
+RUN go test -v
+
+RUN CGO_ENABLED=0 go build -ldflags="-s -w" -gcflags "all=-trimpath=$(pwd)" -o /go/bin/kuber -v kuber.go
+
+FROM gcr.io/distroless/static-debian11
+
+COPY --from=build /go/bin/kuber /
+CMD ["/kuber"]