bump: golang bulder image to 1.20.1-alpine3.17

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.17.13-alpine3.16 as build
+FROM golang:1.20.1-alpine3.17 as build
 WORKDIR /build
 RUN apk add --no-cache git gcc musl-dev
 ADD go.mod go.sum ./
@@ -7,7 +7,7 @@ ADD . .
 RUN go build -o gomodproxy cmd/gomodproxy/main.go && \
     chmod a+x gomodproxy
 
-FROM golang:1.17.13-alpine3.16
+FROM golang:1.20.1-alpine3.17
 ENV GONOSUMDB=gitlab.connectone.pro/*
 WORKDIR /opt/app
 RUN apk add --no-cache tzdata ca-certificates git openssh

go.mod

@@ -1,6 +1,6 @@
 module gitlab.connectone.pro/github/gomodproxy
 
-go 1.17
+go 1.20
 
 require gopkg.in/src-d/go-git.v4 v4.13.1