fix: remove linting issues

cmd/root.go

@@ -62,7 +62,7 @@ func Execute() {
 func PreRun(cmd *cobra.Command, args []string) {
 	f := cmd.PersistentFlags()
 
-	if enabled, _ := f.GetBool("debug"); enabled == true {
+	if enabled, _ := f.GetBool("debug"); enabled {
 		log.SetLevel(log.DebugLevel)
 	}
 
@@ -120,7 +120,10 @@ func Run(c *cobra.Command, names []string) {
 		log.Fatal(err)
 	}
 
-	runUpgradesOnSchedule(filter)
+	if err := runUpgradesOnSchedule(filter); err != nil {
+		log.Error(err)
+	}
+
 	os.Exit(1)
 }
 

internal/actions/check.go

@@ -50,7 +50,7 @@ func cleanupExcessWatchtowers(containers []container.Container, client container
 			continue
 		}
 
-		if cleanup == true {
+		if cleanup {
 			if err := client.RemoveImage(c); err != nil {
 				// logging the original here as we're just returning a count
 				logrus.Error(err)

internal/actions/update.go

@@ -95,7 +95,9 @@ func restartStaleContainer(container container.Container, client container.Clien
 	}
 
 	if params.Cleanup {
-		client.RemoveImage(container)
+		if err := client.RemoveImage(container); err != nil {
+			log.Error(err)
+		}
 	}
 }
 

internal/flags/flags.go

@@ -271,7 +271,7 @@ func setEnvOptStr(env string, opt string) error {
 }
 
 func setEnvOptBool(env string, opt bool) error {
-	if opt == true {
+	if opt {
 		return setEnvOptStr(env, "1")
 	}
 	return nil

main.go

@@ -1,17 +1,10 @@
-package main // import "github.com/containrrr/watchtower"
+package main
 
 import (
 	"github.com/containrrr/watchtower/cmd"
 	log "github.com/sirupsen/logrus"
 )
 
-// DockerAPIMinVersion is the version of the docker API, which is minimally required by
-// watchtower. Currently we require at least API 1.24 and therefore Docker 1.12 or later.
-
-var version = "master"
-var commit = "unknown"
-var date = "unknown"
-
 func init() {
 	log.SetLevel(log.InfoLevel)
 }

pkg/container/client.go

@@ -126,8 +126,8 @@ func (client dockerClient) StopContainer(c Container, timeout time.Duration) err
 		}
 	}
 
-	// Wait for container to exit, but proceed anyway after the timeout elapses
-	client.waitForStop(c, timeout)
+	// TODO: This should probably be checked.
+	_ = client.waitForStopOrTimeout(c, timeout)
 
 	if c.containerInfo.HostConfig.AutoRemove {
 		log.Debugf("AutoRemove container %s, skipping ContainerRemove call.", c.ID())
@@ -140,7 +140,7 @@ func (client dockerClient) StopContainer(c Container, timeout time.Duration) err
 	}
 
 	// Wait for container to be removed. In this case an error is a good thing
-	if err := client.waitForStop(c, timeout); err == nil {
+	if err := client.waitForStopOrTimeout(c, timeout); err == nil {
 		return fmt.Errorf("Container %s (%s) could not be removed", c.Name(), c.ID())
 	}
 
@@ -245,7 +245,9 @@ func (client dockerClient) IsContainerStale(c Container) (bool, error) {
 		defer response.Close()
 
 		// the pull request will be aborted prematurely unless the response is read
-		_, err = ioutil.ReadAll(response)
+		if _, err = ioutil.ReadAll(response); err != nil {
+			log.Error(err)
+		}	
 	}
 
 	newImageInfo, _, err := client.api.ImageInspectWithRaw(bg, imageName)
@@ -269,7 +271,7 @@ func (client dockerClient) RemoveImage(c Container) error {
 	return err
 }
 
-func (client dockerClient) waitForStop(c Container, waitTime time.Duration) error {
+func (client dockerClient) waitForStopOrTimeout(c Container, waitTime time.Duration) error {
 	bg := context.Background()
 	timeout := time.After(waitTime)
 

pkg/container/trust.go

@@ -48,6 +48,10 @@ func EncodedEnvAuth(ref string) (string, error) {
 // The docker config must be mounted on the container
 func EncodedConfigAuth(ref string) (string, error) {
 	server, err := ParseServerAddress(ref)
+	if err != nil {
+		log.Errorf("Unable to parse the image ref %s", err)
+		return "", err
+	}
 	configDir := os.Getenv("DOCKER_CONFIG")
 	if configDir == "" {
 		configDir = "/"
@@ -58,7 +62,8 @@ func EncodedConfigAuth(ref string) (string, error) {
 		return "", err
 	}
 	credStore := CredentialsStore(*configFile)
-	auth, err := credStore.Get(server) // returns (types.AuthConfig{}) if server not in credStore
+	auth, _ := credStore.Get(server) // returns (types.AuthConfig{}) if server not in credStore
+
 	if auth == (types.AuthConfig{}) {
 		log.Debugf("No credentials for %s in %s", server, configFile.Filename)
 		return "", nil