Upgrade Docker go version to 1.17

We need io/fs for some of our dependencies so we might as well jump
the newest version.

Author: caboteria

build/package/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:alpine as builder
+FROM golang:1.17-alpine as builder
 
 ENV GOOS=linux
 ARG GITLAB_USER
@@ -17,7 +17,7 @@ RUN go build  -tags 'osusergo netgo' -o ../bin/eds-server main.go
 
 
 # start fresh
-FROM golang:alpine
+FROM golang:1.17-alpine
 ENV bin=/opt/acnodal/bin/eds-server
 
 # copy executables from the builder image