Update to Go 1.17

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.14-alpine as builder
+FROM golang:1.17-alpine as builder
 
 # Install SSL ca certificates
 RUN apk update && apk add git && apk add ca-certificates
@@ -27,7 +27,7 @@ RUN GOOS=linux GOARCH=amd64 go build --tags=build -o /go/bin/representer .
 # Build a minimal and secured container
 # The ast parser needs Go installed for import statements.
 # Therefore, unfortunately we cannot build from scratch as we would normally do with Go.
-FROM golang:1.14-alpine
+FROM golang:1.17-alpine
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
 COPY --from=builder /etc/passwd /etc/passwd
 COPY --from=builder /go/bin /opt/representer/bin

go.mod

@@ -1,3 +1,3 @@
 module github.com/exercism/go-representer
 
-go 1.14
+go 1.17