refactor(checkoutservice): refactor checkoutservice dockerfile

src/checkoutservice/Dockerfile

@@ -2,20 +2,26 @@
 # SPDX-License-Identifier: Apache-2.0
 
 
-FROM golang:1.22.0-alpine AS builder
-RUN apk update && apk add --no-cache make protobuf-dev
-RUN go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
-RUN go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
+FROM golang:1.22-alpine AS builder
 
 WORKDIR /usr/src/app/
 
-COPY ./src/checkoutservice/ ./
-COPY ./pb/ ./pb
-
-RUN protoc -I ./pb ./pb/demo.proto --go_out=./ --go-grpc_out=./
-RUN go build -o /go/bin/checkoutservice/
-
-# -----------------------------------------------------------------------------
+RUN apk update \
+    && apk add --no-cache make protobuf-dev
+
+RUN --mount=type=cache,target=/go/pkg/mod/ \
+    --mount=type=bind,source=./src/checkoutservice/go.sum,target=go.sum \
+    --mount=type=bind,source=./src/checkoutservice/go.mod,target=go.mod \
+    --mount=type=bind,source=./src/checkoutservice/tools.go,target=tools.go \
+    go mod download \
+    && go list -e -f '{{range .Imports}}{{.}} {{end}}' tools.go | CGO_ENABLED=0 xargs go install -mod=readonly
+
+RUN --mount=type=cache,target=/go/pkg/mod/ \
+    --mount=type=cache,target=/root/.cache/go-build \
+    --mount=type=bind,rw,source=./src/checkoutservice,target=. \
+    --mount=type=bind,rw,source=./pb,target=./pb \
+    protoc -I ./pb ./pb/demo.proto --go_out=./ --go-grpc_out=./ \
+    && go build -ldflags "-s -w" -o /go/bin/checkoutservice/ ./
 
 FROM alpine