change docker build process

Dockerfile

@@ -12,13 +12,27 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM alpine:latest as builder
-RUN addgroup -S apigee && adduser -S apigee -G apigee -u 1001
+FROM golang:latest as builder
+ADD ./apiclient /go/src/apigeecli/apiclient
+ADD ./bundlegen /go/src/apigeecli/bundlegen
+ADD ./client /go/src/apigeecli/client
+ADD ./cmd /go/src/apigeecli/cmd
+ADD ./clilog /go/src/apigeecli/clilog
+COPY main.go /go/src/apigeecli/main.go
+COPY go.mod go.sum /go/src/apigeecli/
+WORKDIR /go/src/apigeecli
+RUN groupadd -r -g 20000 apigee && useradd -M -u 20001 -g 0 -r -c "Default Apigee user" apigee && chown -R 20001:0 /go
+ENV GO111MODULE=on
+RUN go mod download
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -a -ldflags='-s -w -extldflags "-static"' -o /go/bin/apigeecli /go/src/apigeecli/main.go
+
+#without these certificates, we cannot verify the JWT token
+FROM alpine:latest as certs
 RUN apk --update add ca-certificates
 
 FROM scratch
 COPY --from=builder /etc/passwd /etc/group /etc/shadow /etc/
-COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
-COPY apigeecli / 
-USER apigee
+COPY --from=builder /go/bin/apigeecli .
+COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt 
+USER 20001
 ENTRYPOINT ["/apigeecli"]