update lint to go1.16/golangci

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

.golangci.yml

@@ -0,0 +1,30 @@
+run:
+  timeout: 10m
+  skip-files:
+    - ".*\\.pb\\.go$"
+
+  modules-download-mode: vendor
+
+  build-tags:
+
+linters:
+  enable:
+    - gofmt
+    - govet
+    - deadcode
+    - goimports
+    - ineffassign
+    - misspell
+    - unused
+    - varcheck
+    - golint
+    - staticcheck
+    - typecheck
+    - structcheck
+  disable-all: true
+
+issues:
+  exclude-rules:
+    - linters:
+        - golint
+      text: "stutters"

bake/compose.go

@@ -56,7 +56,7 @@ func ParseCompose(dt []byte) (*Config, error) {
 			if reflect.DeepEqual(s.Build, zeroBuildConfig) {
 				// if not make sure they're setting an image or it's invalid d-c.yml
 				if s.Image == "" {
-					return nil, fmt.Errorf("compose file invalid: service %s has neither an image nor a build context specified. At least one must be provided.", s.Name)
+					return nil, fmt.Errorf("compose file invalid: service %s has neither an image nor a build context specified. At least one must be provided", s.Name)
 				}
 				continue
 			}

bake/hcl.go

@@ -161,9 +161,8 @@ func parseHCL(dt []byte, fn string) (_ *Config, err error) {
 			fnl := strings.ToLower(fn)
 			if strings.HasSuffix(fnl, ".json") {
 				return nil, jsondiags
-			} else {
-				return nil, hcldiags
 			}
+			return nil, hcldiags
 		}
 	}
 

bake/remote.go

@@ -21,7 +21,7 @@ type Input struct {
 }
 
 func ReadRemoteFiles(ctx context.Context, dis []build.DriverInfo, url string, names []string, pw progress.Writer) ([]File, *Input, error) {
-	st, filename, ok := detectHttpContext(url)
+	st, filename, ok := detectHTTPContext(url)
 	if !ok {
 		st, ok = detectGitContext(url)
 		if !ok {
@@ -83,7 +83,7 @@ func ReadRemoteFiles(ctx context.Context, dis []build.DriverInfo, url string, na
 }
 
 func IsRemoteURL(url string) bool {
-	if _, _, ok := detectHttpContext(url); ok {
+	if _, _, ok := detectHTTPContext(url); ok {
 		return true
 	}
 	if _, ok := detectGitContext(url); ok {
@@ -92,7 +92,7 @@ func IsRemoteURL(url string) bool {
 	return false
 }
 
-func detectHttpContext(url string) (*llb.State, string, bool) {
+func detectHTTPContext(url string) (*llb.State, string, bool) {
 	if httpPrefix.MatchString(url) {
 		httpContext := llb.HTTP(url, llb.Filename("context"), llb.WithCustomName("[internal] load remote build context"))
 		return &httpContext, "context", true

commands/build.go

@@ -67,7 +67,10 @@ type commonOptions struct {
 	noCache  *bool
 	progress string
 	pull     *bool
+	// golangci-lint#826
+	// nolint:structcheck
 	exportPush bool
+	// nolint:structcheck
 	exportLoad bool
 }
 

commands/diskusage.go

@@ -185,8 +185,6 @@ func printSummary(tw *tabwriter.Writer, dus [][]*client.UsageInfo) {
 		}
 	}
 
-	tw = tabwriter.NewWriter(os.Stdout, 1, 8, 1, '\t', 0)
-
 	if shared > 0 {
 		fmt.Fprintf(tw, "Shared:\t%.2f\n", units.Bytes(shared))
 		fmt.Fprintf(tw, "Private:\t%.2f\n", units.Bytes(total-shared))

commands/imagetools/create.go

@@ -168,7 +168,7 @@ func parseSources(in []string) ([]*src, error) {
 	for i, in := range in {
 		s, err := parseSource(in)
 		if err != nil {
-			return nil, errors.Wrapf(err, "failed to parse source %q, valid sources are digests, refereces and descriptors", in)
+			return nil, errors.Wrapf(err, "failed to parse source %q, valid sources are digests, references and descriptors", in)
 		}
 		out[i] = s
 	}

gometalinter.json

@@ -1,13 +0,0 @@
-{
-  "Vendor": true,
-  "Deadline": "8m",
-  "Exclude": [".*.pb.go"],
-  "DisableAll": true,
-  "Enable": [
-    "gofmt",
-    "goimports",
-    "ineffassign",
-    "vet",
-    "deadcode"
-  ]
-}

hack/dockerfiles/lint.Dockerfile

@@ -1,12 +1,10 @@
-# syntax=docker/dockerfile:1.0-experimental
+# syntax=docker/dockerfile:1.2
 
 FROM golang:1.16-alpine
-RUN apk add --no-cache git yamllint
-RUN go get -u gopkg.in/alecthomas/gometalinter.v1 \
-  && mv /go/bin/gometalinter.v1 /go/bin/gometalinter \
-  && gometalinter --install
+RUN apk add --no-cache gcc musl-dev yamllint
+RUN wget -O- -nv https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s v1.36.0
 WORKDIR /go/src/github.com/docker/buildx
-RUN --mount=target=/go/src/github.com/docker/buildx \
-  gometalinter --config=gometalinter.json ./...
-RUN --mount=target=/go/src/github.com/docker/buildx \
+RUN --mount=target=/go/src/github.com/docker/buildx --mount=target=/root/.cache,type=cache \
+  golangci-lint run
+RUN --mount=target=/go/src/github.com/docker/buildx --mount=target=/root/.cache,type=cache \
   yamllint -c .yamllint.yml --strict .

util/progress/reset.go

@@ -55,6 +55,6 @@ type pw struct {
 	status chan *client.SolveStatus
 }
 
-func (p *pw) Status() chan *client.SolveStatus {
-	return p.status
+func (w *pw) Status() chan *client.SolveStatus {
+	return w.status
 }