golangci-lint: enable importas linter

.golangci.yml

@@ -40,6 +40,7 @@ linters:
     - gosec         # Detects security problems.
     - govet
     - ineffassign
+    - importas      # Enforces consistent import aliases.
     - misspell      # Detects commonly misspelled English words in comments.
     - nakedret      # Detects uses of naked returns.
     - nilerr        # Detects code that returns nil even if it checks that the error is not nil.
@@ -108,6 +109,21 @@ linters:
     lll:
       line-length: 200
 
+    importas:
+      # Do not allow unaliased imports of aliased packages.
+      no-unaliased: true
+
+      alias:
+        # Enforce alias to prevent it accidentally being used instead of our
+        # own errdefs package (or vice-versa).
+        - pkg: github.com/containerd/errdefs
+          alias: cerrdefs
+        - pkg: github.com/opencontainers/image-spec/specs-go/v1
+          alias: ocispec
+          # Enforce that gotest.tools/v3/assert/cmp is always aliased as "is"
+        - pkg: gotest.tools/v3/assert/cmp
+          alias: is
+
     nakedret:
       # Disallow naked returns if func has more lines of code than this setting.
       # Default: 30

cli-plugins/manager/candidate_test.go

@@ -9,7 +9,7 @@ import (
 	"github.com/docker/cli/cli-plugins/metadata"
 	"github.com/spf13/cobra"
 	"gotest.tools/v3/assert"
-	"gotest.tools/v3/assert/cmp"
+	is "gotest.tools/v3/assert/cmp"
 )
 
 type fakeCandidate struct {
@@ -81,7 +81,7 @@ func TestValidateCandidate(t *testing.T) {
 				assert.ErrorContains(t, err, tc.err)
 			case tc.invalid != "":
 				assert.NilError(t, err)
-				assert.Assert(t, cmp.ErrorType(p.Err, reflect.TypeOf(&pluginError{})))
+				assert.Assert(t, is.ErrorType(p.Err, reflect.TypeOf(&pluginError{})))
 				assert.ErrorContains(t, p.Err, tc.invalid)
 			default:
 				assert.NilError(t, err)

cli/command/container/client_test.go

@@ -11,7 +11,7 @@ import (
 	"github.com/docker/docker/api/types/network"
 	"github.com/docker/docker/api/types/system"
 	"github.com/docker/docker/client"
-	specs "github.com/opencontainers/image-spec/specs-go/v1"
+	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
 )
 
 type fakeClient struct {
@@ -22,7 +22,7 @@ type fakeClient struct {
 	createContainerFunc func(config *container.Config,
 		hostConfig *container.HostConfig,
 		networkingConfig *network.NetworkingConfig,
-		platform *specs.Platform,
+		platform *ocispec.Platform,
 		containerName string) (container.CreateResponse, error)
 	containerStartFunc      func(containerID string, options container.StartOptions) error
 	imageCreateFunc         func(ctx context.Context, parentReference string, options image.CreateOptions) (io.ReadCloser, error)
@@ -84,7 +84,7 @@ func (f *fakeClient) ContainerCreate(
 	config *container.Config,
 	hostConfig *container.HostConfig,
 	networkingConfig *network.NetworkingConfig,
-	platform *specs.Platform,
+	platform *ocispec.Platform,
 	containerName string,
 ) (container.CreateResponse, error) {
 	if f.createContainerFunc != nil {

cli/command/container/create.go

@@ -29,7 +29,7 @@ import (
 	"github.com/docker/docker/api/types/versions"
 	"github.com/docker/docker/client"
 	"github.com/docker/docker/errdefs"
-	specs "github.com/opencontainers/image-spec/specs-go/v1"
+	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
@@ -308,7 +308,7 @@ func createContainer(ctx context.Context, dockerCli command.Cli, containerCfg *c
 		}
 	}
 
-	var platform *specs.Platform
+	var platform *ocispec.Platform
 	// Engine API version 1.41 first introduced the option to specify platform on
 	// create. It will produce an error if you try to set a platform on older API
 	// versions, so check the API version here to maintain backwards

cli/command/container/create_test.go

@@ -19,7 +19,7 @@ import (
 	"github.com/docker/docker/api/types/network"
 	"github.com/docker/docker/api/types/system"
 	"github.com/google/go-cmp/cmp"
-	specs "github.com/opencontainers/image-spec/specs-go/v1"
+	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
 	"github.com/spf13/pflag"
 	"gotest.tools/v3/assert"
 	is "gotest.tools/v3/assert/cmp"
@@ -121,7 +121,7 @@ func TestCreateContainerImagePullPolicy(t *testing.T) {
 					config *container.Config,
 					hostConfig *container.HostConfig,
 					networkingConfig *network.NetworkingConfig,
-					platform *specs.Platform,
+					platform *ocispec.Platform,
 					containerName string,
 				) (container.CreateResponse, error) {
 					defer func() { tc.ResponseCounter++ }()
@@ -253,7 +253,7 @@ func TestNewCreateCommandWithContentTrustErrors(t *testing.T) {
 				createContainerFunc: func(config *container.Config,
 					hostConfig *container.HostConfig,
 					networkingConfig *network.NetworkingConfig,
-					platform *specs.Platform,
+					platform *ocispec.Platform,
 					containerName string,
 				) (container.CreateResponse, error) {
 					return container.CreateResponse{}, errors.New("shouldn't try to pull image")
@@ -308,7 +308,7 @@ func TestNewCreateCommandWithWarnings(t *testing.T) {
 				createContainerFunc: func(config *container.Config,
 					hostConfig *container.HostConfig,
 					networkingConfig *network.NetworkingConfig,
-					platform *specs.Platform,
+					platform *ocispec.Platform,
 					containerName string,
 				) (container.CreateResponse, error) {
 					return container.CreateResponse{Warnings: tc.warnings}, nil
@@ -347,7 +347,7 @@ func TestCreateContainerWithProxyConfig(t *testing.T) {
 		createContainerFunc: func(config *container.Config,
 			hostConfig *container.HostConfig,
 			networkingConfig *network.NetworkingConfig,
-			platform *specs.Platform,
+			platform *ocispec.Platform,
 			containerName string,
 		) (container.CreateResponse, error) {
 			sort.Strings(config.Env)

cli/command/container/run_test.go

@@ -21,7 +21,7 @@ import (
 	"github.com/docker/docker/api/types/image"
 	"github.com/docker/docker/api/types/network"
 	"github.com/docker/docker/pkg/jsonmessage"
-	specs "github.com/opencontainers/image-spec/specs-go/v1"
+	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
 	"github.com/spf13/pflag"
 	"gotest.tools/v3/assert"
 	is "gotest.tools/v3/assert/cmp"
@@ -57,7 +57,7 @@ func TestRunValidateFlags(t *testing.T) {
 
 func TestRunLabel(t *testing.T) {
 	fakeCLI := test.NewFakeCli(&fakeClient{
-		createContainerFunc: func(_ *container.Config, _ *container.HostConfig, _ *network.NetworkingConfig, _ *specs.Platform, _ string) (container.CreateResponse, error) {
+		createContainerFunc: func(_ *container.Config, _ *container.HostConfig, _ *network.NetworkingConfig, _ *ocispec.Platform, _ string) (container.CreateResponse, error) {
 			return container.CreateResponse{
 				ID: "id",
 			}, nil
@@ -80,7 +80,7 @@ func TestRunAttach(t *testing.T) {
 	var conn net.Conn
 	attachCh := make(chan struct{})
 	fakeCLI := test.NewFakeCli(&fakeClient{
-		createContainerFunc: func(_ *container.Config, _ *container.HostConfig, _ *network.NetworkingConfig, _ *specs.Platform, _ string) (container.CreateResponse, error) {
+		createContainerFunc: func(_ *container.Config, _ *container.HostConfig, _ *network.NetworkingConfig, _ *ocispec.Platform, _ string) (container.CreateResponse, error) {
 			return container.CreateResponse{
 				ID: "id",
 			}, nil
@@ -151,7 +151,7 @@ func TestRunAttachTermination(t *testing.T) {
 	killCh := make(chan struct{})
 	attachCh := make(chan struct{})
 	fakeCLI := test.NewFakeCli(&fakeClient{
-		createContainerFunc: func(_ *container.Config, _ *container.HostConfig, _ *network.NetworkingConfig, _ *specs.Platform, _ string) (container.CreateResponse, error) {
+		createContainerFunc: func(_ *container.Config, _ *container.HostConfig, _ *network.NetworkingConfig, _ *ocispec.Platform, _ string) (container.CreateResponse, error) {
 			return container.CreateResponse{
 				ID: "id",
 			}, nil
@@ -229,7 +229,7 @@ func TestRunPullTermination(t *testing.T) {
 	attachCh := make(chan struct{})
 	fakeCLI := test.NewFakeCli(&fakeClient{
 		createContainerFunc: func(config *container.Config, hostConfig *container.HostConfig, networkingConfig *network.NetworkingConfig,
-			platform *specs.Platform, containerName string,
+			platform *ocispec.Platform, containerName string,
 		) (container.CreateResponse, error) {
 			return container.CreateResponse{}, errors.New("shouldn't try to create a container")
 		},
@@ -332,7 +332,7 @@ func TestRunCommandWithContentTrustErrors(t *testing.T) {
 				createContainerFunc: func(config *container.Config,
 					hostConfig *container.HostConfig,
 					networkingConfig *network.NetworkingConfig,
-					platform *specs.Platform,
+					platform *ocispec.Platform,
 					containerName string,
 				) (container.CreateResponse, error) {
 					return container.CreateResponse{}, errors.New("shouldn't try to pull image")

cli/context/store/metadata_test.go

@@ -10,7 +10,7 @@ import (
 
 	"github.com/docker/docker/errdefs"
 	"gotest.tools/v3/assert"
-	"gotest.tools/v3/assert/cmp"
+	is "gotest.tools/v3/assert/cmp"
 )
 
 func testMetadata(name string) Metadata {
@@ -69,8 +69,8 @@ func TestMetadataRespectJsonAnnotation(t *testing.T) {
 	assert.NilError(t, testee.createOrUpdate(testMetadata("test")))
 	bytes, err := os.ReadFile(filepath.Join(testDir, string(contextdirOf("test")), "meta.json"))
 	assert.NilError(t, err)
-	assert.Assert(t, cmp.Contains(string(bytes), "a_very_recognizable_field_name"))
-	assert.Assert(t, cmp.Contains(string(bytes), "another_very_recognizable_field_name"))
+	assert.Assert(t, is.Contains(string(bytes), "a_very_recognizable_field_name"))
+	assert.Assert(t, is.Contains(string(bytes), "another_very_recognizable_field_name"))
 }
 
 func TestMetadataList(t *testing.T) {