Fix linting issues and update make lint target.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>

.dockerignore

@@ -2,3 +2,5 @@
 private.env
 *.private.*
 providers/azurebatch/deployment/
+Dockerfile
+.dockerignore

.golangci.yml

@@ -2,6 +2,8 @@ linter-settings:
   lll:
     line-length: 200
 
+timeout: 10m
+
 run:
   skip-dirs:
     # This directory contains copy code from upstream kubernetes/kubernetes, skip it.

Dockerfile

@@ -1,3 +1,5 @@
+ARG GOLANG_CI_LINT_VERSION
+
 FROM golang:1.18 as builder
 ENV PATH /go/bin:/usr/local/go/bin:$PATH
 ENV GOPATH /go
@@ -7,6 +9,22 @@ ARG BUILD_TAGS=""
 RUN make VK_BUILD_TAGS="${BUILD_TAGS}" build
 RUN cp bin/virtual-kubelet /usr/bin/virtual-kubelet
 
+FROM golangci/golangci-lint:${GOLANG_CI_LINT_VERSION} as lint
+WORKDIR /app
+COPY go.mod ./
+COPY go.sum ./
+RUN \
+    --mount=type=cache,target=/root/.cache/go-build \
+    --mount=type=cache,target=/go/pkg/mod \
+    go mod download
+COPY . .
+ARG OUT_FORMAT
+RUN \
+    --mount=type=cache,target=/root/.cache/go-build \
+    --mount=type=cache,target=/go/pkg/mod \
+    --mount=type=cache,target=/root/.cache/golangci-lint \
+    golangci-lint run -v $(if [ -n "${OUT_FORMAT}" ]; then echo "--out-format=${OUT_FORMAT}"; fi)
+
 FROM scratch
 COPY --from=builder /usr/bin/virtual-kubelet /usr/bin/virtual-kubelet
 COPY --from=builder /etc/ssl/certs/ /etc/ssl/certs

Makefile

@@ -183,6 +183,10 @@ envtest: kubebuilder_2.3.1_${TEST_OS}_${TEST_ARCH}
 fmt:
 	goimports -w $(shell go list -f '{{.Dir}}' ./...)
 
+
+export GOLANG_CI_LINT_VERSION ?= v1.48.0
+DOCKER_BUILD ?= docker buildx build
+
 .PHONY: lint
-lint: $(gobin_tool)
+lint:
-	gobin -run github.com/golangci/golangci-lint/cmd/golangci-lint@v1.33.0 run ./...
+	$(DOCKER_BUILD) --target=lint --build-arg GOLANG_CI_LINT_VERSION --build-arg OUT_FORMAT .

cmd/virtual-kubelet/internal/provider/mock/mock.go

@@ -5,8 +5,8 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"math/rand"
+	"os"
 	"strings"
 	"time"
 
@@ -97,7 +97,7 @@ func NewMockProvider(providerConfig, nodeName, operatingSystem string, internalI
 
 // loadConfig loads the given json configuration files.
 func loadConfig(providerConfig, nodeName string) (config MockConfig, err error) {
-	data, err := ioutil.ReadFile(providerConfig)
+	data, err := os.ReadFile(providerConfig)
 	if err != nil {
 		return config, err
 	}
@@ -283,7 +283,7 @@ func (p *MockProvider) GetContainerLogs(ctx context.Context, namespace, podName,
 	ctx = addAttributes(ctx, span, namespaceKey, namespace, nameKey, podName, containerNameKey, containerName)
 
 	log.G(ctx).Infof("receive GetContainerLogs %q", podName)
-	return ioutil.NopCloser(strings.NewReader("")), nil
+	return io.NopCloser(strings.NewReader("")), nil
 }
 
 // RunInContainer executes a command in a container in the pod, copying data

node/nodeutil/tls.go

@@ -4,7 +4,7 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"fmt"
-	"io/ioutil"
+	"os"
 )
 
 // WithTLSConfig returns a NodeOpt which creates a base TLSConfig with the default cipher suites and tls min verions.
@@ -31,7 +31,7 @@ func WithTLSConfig(opts ...func(*tls.Config) error) NodeOpt {
 // WithCAFromPath makes a TLS config option to set up client auth using the path to a PEM encoded CA cert.
 func WithCAFromPath(p string) func(*tls.Config) error {
 	return func(cfg *tls.Config) error {
-		pem, err := ioutil.ReadFile(p)
+		pem, err := os.ReadFile(p)
 		if err != nil {
 			return fmt.Errorf("error reading ca cert pem: %w", err)
 		}