Add solution message if Docker is rootless

cmd/minikube/cmd/start.go

@@ -747,7 +747,7 @@ func validateDriver(ds registry.DriverState, existing *config.ClusterConfig) {
 	}
 
 	r := reason.MatchKnownIssue(reason.Kind{}, st.Error, runtime.GOOS)
-	if r.ID != "" {
+	if r != nil && r.ID != "" {
 		exitIfNotForced(*r, st.Error.Error())
 	}
 

pkg/drivers/kic/oci/info.go

@@ -32,6 +32,7 @@ type SysInfo struct {
 	TotalMemory   int64    // TotalMemory Total available ram
 	OSType        string   // container's OsType (windows or linux)
 	Swarm         bool     // Weather or not the docker swarm is active
+	Rootless      bool     // Weather or not the docker is running on rootless mode
 	StorageDriver string   // the storage driver for the daemon  (for example overlay2)
 	Errors        []string // any server issues
 }
@@ -62,7 +63,14 @@ func DaemonInfo(ociBin string) (SysInfo, error) {
 		return *cachedSysInfo, err
 	}
 	d, err := dockerSystemInfo()
-	cachedSysInfo = &SysInfo{CPUs: d.NCPU, TotalMemory: d.MemTotal, OSType: d.OSType, Swarm: d.Swarm.LocalNodeState == "active", StorageDriver: d.Driver, Errors: d.ServerErrors}
+	rootless := false
+	for _, se := range d.SecurityOptions {
+		if strings.HasPrefix(se, "name=rootless") {
+			rootless = true
+			break
+		}
+	}
+	cachedSysInfo = &SysInfo{CPUs: d.NCPU, TotalMemory: d.MemTotal, OSType: d.OSType, Swarm: d.Swarm.LocalNodeState == "active", Rootless: rootless, StorageDriver: d.Driver, Errors: d.ServerErrors}
 	return *cachedSysInfo, err
 }
 

pkg/minikube/registry/drvs/docker/docker.go

@@ -131,6 +131,15 @@ func status() registry.State {
 		return suggestFix("info", -1, serr, fmt.Errorf("docker info error: %s", serr))
 	}
 
+	if si.Rootless {
+		return registry.State{
+			Reason:    "PROVIDER_DOCKER_ROOTLESS",
+			Error:     errors.New("rootless Docker not supported yet"),
+			Installed: true,
+			Healthy:   false,
+			Doc:       "https://github.com/kubernetes/minikube/issues/10836"}
+	}
+
 	return checkNeedsImprovement()
 }