[windows] wails doctor docker support Better output

v2/cmd/wails/internal/commands/doctor/doctor.go

@@ -116,7 +116,6 @@ func AddSubcommand(app *clir.Cli, w io.Writer) error {
 
 		if len(dependenciesMissing) == 0 && dependenciesAvailableRequired == 0 {
 			logger.Println("Your system is ready for Wails development!")
-			logger.Println("")
 		}
 
 		if dependenciesAvailableRequired != 0 {

v2/internal/system/packagemanager/pm.go

@@ -40,14 +40,8 @@ func (d DependencyList) InstallAllRequiredCommand() string {
 
 	result := ""
 	for _, dependency := range d {
-		if dependency.PackageName != "" {
-			if !dependency.Installed && !dependency.Optional {
-				if result == "" {
-					result = dependency.InstallCommand
-				} else {
-					result += " " + dependency.PackageName
-				}
-			}
+		if !dependency.Installed && !dependency.Optional {
+			result += "  - " + dependency.Name + ": " + dependency.InstallCommand + "\n"
 		}
 	}
 
@@ -59,14 +53,8 @@ func (d DependencyList) InstallAllOptionalCommand() string {
 
 	result := ""
 	for _, dependency := range d {
-		if dependency.PackageName != "" {
-			if !dependency.Installed && dependency.Optional {
-				if result == "" {
-					result = "  - " + dependency.Name + ": " + dependency.InstallCommand + "\n"
-				} else {
-					result += " " + dependency.PackageName
-				}
-			}
+		if !dependency.Installed && dependency.Optional {
+			result += "  - " + dependency.Name + ": " + dependency.InstallCommand + "\n"
 		}
 	}
 

v2/internal/system/system.go

@@ -42,7 +42,7 @@ func checkNPM() *packagemanager.Dependancy {
 		Name:           "npm ",
 		PackageName:    "N/A",
 		Installed:      installed,
-		InstallCommand: "Install from https://nodejs.org/en/download/",
+		InstallCommand: "Available at https://nodejs.org/en/download/",
 		Version:        version,
 		Optional:       false,
 		External:       false,
@@ -64,7 +64,42 @@ func checkUPX() *packagemanager.Dependancy {
 		Name:           "upx ",
 		PackageName:    "N/A",
 		Installed:      installed,
-		InstallCommand: "Install from https://upx.github.io/",
+		InstallCommand: "Available at https://upx.github.io/",
+		Version:        version,
+		Optional:       true,
+		External:       false,
+	}
+}
+
+func checkDocker() *packagemanager.Dependancy {
+
+	// Check for npm
+	output, err := exec.Command("docker", "version").Output()
+	installed := true
+	version := ""
+
+	// Docker errors if it is not running so check for that
+	if len(output) == 0 && err != nil {
+		installed = false
+	} else {
+		// Version is in a line like: " Version:           20.10.5"
+		versionOutput := strings.Split(string(output), "\n")
+		for _, line := range versionOutput[1:] {
+			splitLine := strings.Split(line, ":")
+			if len(splitLine) > 1 {
+				key := strings.TrimSpace(splitLine[0])
+				if key == "Version" {
+					version = strings.TrimSpace(splitLine[1])
+					break
+				}
+			}
+		}
+	}
+	return &packagemanager.Dependancy{
+		Name:           "docker ",
+		PackageName:    "N/A",
+		Installed:      installed,
+		InstallCommand: "Available at https://www.docker.com/products/docker-desktop",
 		Version:        version,
 		Optional:       true,
 		External:       false,

v2/internal/system/system_windows.go

@@ -31,7 +31,7 @@ func (i *Info) discover() error {
 		Name:           "gcc ",
 		PackageName:    "N/A",
 		Installed:      installed,
-		InstallCommand: "",
+		InstallCommand: "Available at https://jmeubank.github.io/tdm-gcc/",
 		Version:        version,
 		Optional:       false,
 		External:       false,
@@ -39,6 +39,7 @@ func (i *Info) discover() error {
 	i.Dependencies = append(i.Dependencies, gccDependency)
 	i.Dependencies = append(i.Dependencies, checkNPM())
 	i.Dependencies = append(i.Dependencies, checkUPX())
+	i.Dependencies = append(i.Dependencies, checkDocker())
 
 	return nil
 }