add client interceptor example

cmd/server/main.go

@@ -1,28 +1,26 @@
 package main
 
 import (
+	"database/sql"
 	"flag"
-	"net"
-
-	"github.com/jinzhu/gorm"
-	"github.com/sirupsen/logrus"
-
 	"fmt"
+	"net"
 	"net/http"
 	"time"
 
-	"database/sql"
-
 	"github.com/infobloxopen/atlas-app-toolkit/gateway"
 	"github.com/infobloxopen/atlas-app-toolkit/gorm/resource"
 	"github.com/infobloxopen/atlas-app-toolkit/health"
 	"github.com/infobloxopen/atlas-app-toolkit/server"
 	"github.com/infobloxopen/atlas-contacts-app/cmd"
 	"github.com/infobloxopen/atlas-contacts-app/pkg/pb"
 
+	grpc_middleware "github.com/grpc-ecosystem/go-grpc-middleware"
+	grpc_prometheus "github.com/grpc-ecosystem/go-grpc-prometheus"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
-	"github.com/grpc-ecosystem/go-grpc-middleware"
 
+	"github.com/jinzhu/gorm"
+	"github.com/sirupsen/logrus"
 	"google.golang.org/grpc"
 )
 
@@ -137,10 +135,14 @@ func ServeExternal(logger *logrus.Logger) error {
 			gateway.WithGatewayOptions(
 				runtime.WithMetadata(gateway.NewPresenceAnnotator("PUT")),
 			),
-			 gateway.WithDialOptions(
+			gateway.WithDialOptions(
 				[]grpc.DialOption{grpc.WithInsecure(), grpc.WithUnaryInterceptor(
 					grpc_middleware.ChainUnaryClient(
-						[]grpc.UnaryClientInterceptor{gateway.ClientUnaryInterceptor, gateway.PresenceClientInterceptor()}...,
+						[]grpc.UnaryClientInterceptor{
+							grpc_prometheus.UnaryClientInterceptor,
+							gateway.ClientUnaryInterceptor,
+							gateway.PresenceClientInterceptor(),
+						}...,
 					),
 				)}...,
 			),

docker/Dockerfile

@@ -3,10 +3,16 @@ FROM golang:1.10.0 AS builder
 LABEL stage=server-intermediate
 WORKDIR /go/src/github.com/infobloxopen/atlas-contacts-app
 COPY . .
-RUN CGO_ENABLED=0 GOOS=linux go build -o bin/server ./cmd/server
+
+RUN go build -o bin/server ./cmd/server
 
 # copy the server binary from builder stage; run the server binary
 FROM alpine:latest AS runner
+
+# Go programs require libc
+RUN mkdir /lib64 && \
+    ln -s /lib/libc.musl-x86_64.so.1 /lib64/ld-linux-x86-64.so.2
+
 WORKDIR /bin
 COPY --from=builder /go/src/github.com/infobloxopen/atlas-contacts-app/bin/server .
 COPY pkg/pb/contacts.swagger.json /go/src/github.com/infobloxopen/atlas-contacts-app/www/swagger.json