Update Dockerfile

Author: valeraBr

Dockerfile

@@ -1,17 +1,20 @@
-FROM golang:1.18-alpine3.15 as build
+# syntax=docker/dockerfile:1
+
+FROM --platform=$BUILDPLATFORM golang:1.19-alpine3.17 as build
 
 WORKDIR $GOPATH/src/app
 COPY . .
 
-RUN CGO_ENABLED=0 go build -ldflags="-s -w" -a -o  .
+ARG TARGETOS TARGETARCH
+RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags="-w" -a -o  .
 
 
-FROM alpine:3.15
+FROM alpine:3.17
 ENV GOPATH="/go/src"
 WORKDIR /run
 
 COPY --from=build $GOPATH/app/rest-gateway .
 COPY --from=build $GOPATH/app/conf/* conf/
 EXPOSE 3000
 
-ENTRYPOINT ["/run/rest-gateway"]
+ENTRYPOINT ["/run/rest-gateway"]