From e97c0d109219611b7e7b8569aa6397b7f3942efd Mon Sep 17 00:00:00 2001
From: Rafael Soares <rafael.dvlpr@gmail.com>
Date: Wed, 27 Oct 2021 16:25:01 -0300
Subject: [PATCH] update Dockerfile to use multi-stage build

---
 docker/Dockerfile | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/docker/Dockerfile b/docker/Dockerfile
index d9a0012bf..f2ee77121 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,20 +1,19 @@
-FROM golang:1.16.6-alpine3.14
+FROM golang:1.16.8-bullseye AS builder
 
-WORKDIR /app
+WORKDIR /src
+
+COPY go.mod go.sum ./
+RUN go mod download -x
 
-RUN apk update \
-  && apk add --virtual build-deps gcc git \
-  && rm -rf /var/cache/apk/*
+COPY . ./
 
-RUN addgroup -S golang \
-  && adduser -S -G golang golang
+RUN GOOS=linux GOARCH=amd64 go build -o /bin/courier ./cmd/courier/*.go
 
-COPY . .
+FROM gcr.io/distroless/base-debian11
 
-RUN go install -v ./cmd/...
-RUN chown -R golang /app
+WORKDIR /app
 
-USER golang
+COPY --from=builder bin/courier ./
 
 EXPOSE 8080
-ENTRYPOINT ["courier"]
+ENTRYPOINT ["./courier"]
\ No newline at end of file