Add multistage build

Author: fabianvf

Dockerfile.build

@@ -0,0 +1,18 @@
+FROM golang:1.12 AS builder
+
+ENV CGO_ENABLED=0
+
+WORKDIR /build
+
+COPY go.mod /build/go.mod
+RUN go mod download
+
+COPY cmd /build/cmd
+COPY pkg /build/pkg
+RUN go build -o mc-router cmd/mc-router/main.go
+
+FROM scratch
+
+COPY --from=builder /build/mc-router /bin/mc-router
+
+ENTRYPOINT ["/bin/mc-router"]

cmd/mc-router/main.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"flag"
 	"fmt"
-	"github.com/itzg/mc-router/server"
+	"github.com/itzg/mc-router/pkg/server"
 	"github.com/sirupsen/logrus"
 	"net"
 	"os"

mcproto/types.go renamed to pkg/mcproto/types.go

@@ -3,7 +3,7 @@ package server
 import (
 	"net"
 	"github.com/sirupsen/logrus"
-	"github.com/itzg/mc-router/mcproto"
+	"github.com/itzg/mc-router/pkg/mcproto"
 	"context"
 	"io"
 	"bytes"