use Go 1.20.x

Signed-off-by: Mikko Ylinen <mikko.ylinen@intel.com>

.github/workflows/gofmt.yaml

@@ -12,10 +12,11 @@ jobs:
     name: gofmt
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/setup-go@v3
-        with:
-          go-version: 1.18
       - uses: actions/checkout@v3
+      - uses: actions/setup-go@v4
+        with:
+          go-version-file: go.mod
+          check-latest: true
       - name: gofmt
         run : |
           gofmt -s -w .

.github/workflows/golangci-lint.yaml

@@ -12,10 +12,11 @@ jobs:
     name: lint
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/setup-go@v3
-        with:
-          go-version: 1.18
       - uses: actions/checkout@v3
+      - uses: actions/setup-go@v4
+        with:
+          go-version-file: go.mod
+          check-latest: true
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:

.github/workflows/makefile.yml

@@ -15,9 +15,10 @@ jobs:
     - uses: actions/checkout@v3
 
     - name: Set up Go
-      uses: actions/setup-go@v3
+      uses: actions/setup-go@v4
       with:
-        go-version: 1.18
+        go-version-file: go.mod
+        check-latest: true
 
     - name: Download controller-gen
       run: make controller-gen

Dockerfile

@@ -4,7 +4,7 @@ ARG IMG_NAME
 ARG IMG_VERSION
 
 # Build the manager binary
-FROM ${IMG_NAME:-golang}:${IMG_VERSION:-1.18} as builder
+FROM ${IMG_NAME:-golang}:${IMG_VERSION:-1.20} as builder
 
 WORKDIR /workspace
 # Copy the Go Modules manifests

go.mod

@@ -1,6 +1,6 @@
 module github.com/confidential-containers/operator
 
-go 1.18
+go 1.20
 
 require (
 	github.com/go-logr/logr v1.2.3