Update to go 1.20

Signed-off-by: James Hewitt <james.hewitt@uk.ibm.com>

.github/workflows/build.yml

@@ -26,8 +26,8 @@ jobs:
       fail-fast: false
       matrix:
         go:
-          - 1.18
-          - 1.19.10
+          - 1.20.7
+          - 1.21
     steps:
       -
         name: Checkout

Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.19.10
+ARG GO_VERSION=1.20.7
 ARG ALPINE_VERSION=3.18
 ARG XX_VERSION=1.2.1
 

dockerfiles/git.Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.19.10
+ARG GO_VERSION=1.20.7
 ARG ALPINE_VERSION=3.18
 
 FROM alpine:${ALPINE_VERSION} AS base

dockerfiles/lint.Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.19.10
+ARG GO_VERSION=1.20.7
 ARG ALPINE_VERSION=3.18
 ARG GOLANGCI_LINT_VERSION=v1.52
 ARG BUILDTAGS="include_gcs"

dockerfiles/vendor.Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-ARG GO_VERSION=1.19.10
+ARG GO_VERSION=1.20.7
 ARG ALPINE_VERSION=3.18
 ARG MODOUTDATED_VERSION=v0.8.0
 

go.mod

@@ -1,6 +1,6 @@
 module github.com/distribution/distribution/v3
 
-go 1.18
+go 1.20
 
 require (
 	cloud.google.com/go/storage v1.30.1