Merge pull request #88 from crazy-max/fix-gomod

gomod: update min go version

Author: crazy-max

go.mod

@@ -1,6 +1,6 @@
 module github.com/docker/buildkit-syft-scanner
 
-go 1.21.3
+go 1.21.0
 
 require (
 	github.com/anchore/go-logger v0.0.0-20230725134548-c21dafa1ec5a

hack/dockerfiles/vendor.Dockerfile

@@ -16,9 +16,10 @@
 
 # upstream at https://github.com/moby/buildkit/blob/master/hack/dockerfiles/vendor.Dockerfile
 
-ARG GO_VERSION=1.20
+ARG GO_VERSION="1.21"
+ARG ALPINE_VERSION="3.17"
 
-FROM golang:${GO_VERSION}-alpine AS base
+FROM golang:${GO_VERSION}-alpine${ALPINE_VERSION} AS base
 RUN apk add --no-cache git rsync
 WORKDIR /src