Switch to WalkDir in bundle package

Bump Go version to 1.16 to be able to use `WalkDir`.

Switch to `WalkDir` function.

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     unit:
         strategy:
           matrix:
-            go-version: [1.15.x]
+            go-version: [1.16.x]
             os: [ubuntu-latest]
         runs-on: ${{ matrix.os }}
         steps:
@@ -30,7 +30,7 @@ jobs:
         strategy:
           fail-fast: false
           matrix:
-            go-version: [1.15.x]
+            go-version: [1.16.x]
             os: [ubuntu-latest]
             kubernetes:
               # Only v1.20 is currently enabled because of the flakiness in the tests, specifically API calls failing with "etcdserver: request timed out"
@@ -92,7 +92,7 @@ jobs:
         strategy:
           fail-fast: false
           matrix:
-            go-version: [1.15.x]
+            go-version: [1.16.x]
             os: [ubuntu-latest]
             kubernetes:
               # Only v1.20 is currently enabled because of the flakiness in the tests, specifically API calls failing with "etcdserver: request timed out"

.github/workflows/verify.yaml

@@ -20,7 +20,7 @@ jobs:
     - name: Set up Go 1.x
       uses: actions/setup-go@v2
       with:
-        go-version: ^1.15
+        go-version: ^1.16
 
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2

go.mod

@@ -1,6 +1,6 @@
 module github.com/shipwright-io/build
 
-go 1.15
+go 1.16
 
 require (
 	github.com/docker/cli v20.10.7+incompatible

openshift-ci/Dockerfile.tools

@@ -32,7 +32,7 @@ WORKDIR /tmp
 RUN mkdir -p $GOPATH/bin
 RUN mkdir -p /tmp/goroot
 
-RUN curl -Lo go1.15.7.linux-amd64.tar.gz https://dl.google.com/go/go1.15.7.linux-amd64.tar.gz && tar -C /tmp/goroot -xzf go1.15.7.linux-amd64.tar.gz
+RUN curl -Lo go1.16.linux-amd64.tar.gz https://dl.google.com/go/go1.16.linux-amd64.tar.gz && tar -C /tmp/goroot -xzf go1.16.linux-amd64.tar.gz
 RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/`curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt`/bin/linux/amd64/kubectl && chmod +x kubectl && mv kubectl $GOPATH/bin/
 
 RUN go get -u github.com/onsi/ginkgo/ginkgo  # installs the ginkgo CLI

pkg/bundle/bundle.go

@@ -10,6 +10,7 @@ import (
 	"bytes"
 	"fmt"
 	"io"
+	"io/fs"
 	"os"
 	"path/filepath"
 	"strings"
@@ -144,21 +145,26 @@ func Pack(directory string) (io.Reader, error) {
 	var tw = tar.NewWriter(&buf)
 	defer tw.Close()
 
-	err := filepath.Walk(directory, func(path string, info os.FileInfo, err error) error {
+	err := filepath.WalkDir(directory, func(path string, d fs.DirEntry, err error) error {
 		// Bail out on path errors
 		if err != nil {
 			return err
 		}
 
 		// Skip files on the ignore list
-		if matcher.Match(split(path), info.IsDir()) {
-			if info.IsDir() {
+		if matcher.Match(split(path), d.IsDir()) {
+			if d.IsDir() {
 				return filepath.SkipDir
 			}
 
 			return nil
 		}
 
+		info, err := d.Info()
+		if err != nil {
+			return err
+		}
+
 		header, err := tar.FileInfoHeader(info, path)
 		if err != nil {
 			return err

samples/build/build_ko_cr.yaml

@@ -10,7 +10,7 @@ spec:
     - name: go-flags
       value: "-v -mod=vendor -ldflags=-w"
     - name: go-version
-      value: "1.15"
+      value: "1.16"
     - name: package-directory
       value: ./cmd/shipwright-build-controller
   source: