Linter fixes

Signed-off-by: Ulysses Souza <ulyssessouza@gmail.com>

aci/compose.go

@@ -231,7 +231,7 @@ func (cs *aciComposeService) Ps(ctx context.Context, projectName string, options
 }
 
 func checkUnsupportedPsOptions(ctx context.Context, o api.PsOptions) error {
-	return utils.CheckUnsupported(ctx,nil, o.All, false, "ps", "all")
+	return utils.CheckUnsupported(ctx, nil, o.All, false, "ps", "all")
 }
 
 func (cs *aciComposeService) List(ctx context.Context, opts api.ListOptions) ([]api.Stack, error) {

api/config/config.go

@@ -27,7 +27,11 @@ import (
 	"github.com/docker/compose-cli/api/context/store"
 )
 
-const ContextTypeKey = "context_type"
+// ContextKey defines a type for keys in the context passed
+type ContextKey string
+
+// ContextTypeKey is the key for context type stored in context.Context
+const ContextTypeKey ContextKey = "context_type"
 
 var configDir string
 

cli/config/flags.go

@@ -35,10 +35,10 @@ type ConfigFlags struct {
 
 // AddConfigFlags adds persistent (global) flags
 func (c *ConfigFlags) AddConfigFlags(flags *pflag.FlagSet) {
-	flags.StringVar(&c.Config, config.ConfigFlagName, ConfDir(), "Location of the client config files `DIRECTORY`")
+	flags.StringVar(&c.Config, config.ConfigFlagName, confDir(), "Location of the client config files `DIRECTORY`")
 }
 
-func ConfDir() string {
+func confDir() string {
 	env := os.Getenv("DOCKER_CONFIG")
 	if env != "" {
 		return env

utils/check.go

@@ -27,6 +27,7 @@ import (
 	"github.com/pkg/errors"
 )
 
+// CheckUnsupported checks if a flag was used when it shouldn't and adds an error in case
 func CheckUnsupported(ctx context.Context, errs error, toCheck, expectedValue interface{}, commandName, msg string) error {
 	if !(isNil(toCheck) && isNil(expectedValue)) && toCheck != expectedValue {
 		ctype := ctx.Value(config.ContextTypeKey).(string)