BREAKING CHANGE: remove root default password, configure it only if provided (close #7)

Signed-off-by: Adphi <philippe.adrien.nousse@gmail.com>

Makefile

@@ -114,10 +114,10 @@ examples: build-dev
 	@mkdir -p examples/build
 	@for f in $$(find examples -type f -name '*Dockerfile' -maxdepth 1); do \
   		echo "Building $$f"; \
-  		./d2vm build -o examples/build/$$(basename $$f|cut -d'.' -f1).qcow2 -f $$f examples; \
+  		./d2vm build -o examples/build/$$(basename $$f|cut -d'.' -f1).qcow2 -p root -f $$f examples --force; \
 	  done
 	@echo "Building examples/full/Dockerfile"
-	@./d2vm build -o examples/build/full.qcow2 --build-arg=USER=adphi --build-arg=PASSWORD=adphi examples/full
+	@./d2vm build -o examples/build/full.qcow2 --build-arg=USER=adphi --build-arg=PASSWORD=adphi examples/full --force
 
 cli-docs: .build
 	@rm -rf $(CLI_REFERENCE_PATH)

README.md

@@ -239,8 +239,6 @@ RUN apt update && apt install -y openssh-server && \
 
 ```
 
-When building the vm image, *d2vm* will create a root password, so there is no need to configure it now.
-
 Build the vm image:
 
 The *build* command take most of its flags and arguments from the *docker build* command.

cmd/d2vm/build.go

@@ -117,7 +117,7 @@ func init() {
 	buildCmd.Flags().StringArrayVar(&buildArgs, "build-arg", nil, "Set build-time variables")
 
 	buildCmd.Flags().StringVarP(&output, "output", "o", output, "The output image, the extension determine the image format, raw will be used if none. Supported formats: "+strings.Join(d2vm.OutputFormats(), " "))
-	buildCmd.Flags().StringVarP(&password, "password", "p", "root", "Root user password")
+	buildCmd.Flags().StringVarP(&password, "password", "p", "", "Optional root user password")
 	buildCmd.Flags().StringVarP(&size, "size", "s", "10G", "The output image size")
 	buildCmd.Flags().BoolVar(&force, "force", false, "Override output image")
 	buildCmd.Flags().StringVar(&cmdLineExtra, "append-to-cmdline", "", "Extra kernel cmdline arguments to append to the generated one")

cmd/d2vm/convert.go

@@ -111,7 +111,7 @@ func parseSize(s string) (int64, error) {
 func init() {
 	convertCmd.Flags().BoolVar(&pull, "pull", false, "Always pull docker image")
 	convertCmd.Flags().StringVarP(&output, "output", "o", output, "The output image, the extension determine the image format, raw will be used if none. Supported formats: "+strings.Join(d2vm.OutputFormats(), " "))
-	convertCmd.Flags().StringVarP(&password, "password", "p", "root", "The Root user password")
+	convertCmd.Flags().StringVarP(&password, "password", "p", "", "Optional root user password")
 	convertCmd.Flags().StringVarP(&size, "size", "s", "10G", "The output image size")
 	convertCmd.Flags().BoolVarP(&force, "force", "f", false, "Override output qcow2 image")
 	convertCmd.Flags().StringVar(&cmdLineExtra, "append-to-cmdline", "", "Extra kernel cmdline arguments to append to the generated one")

cmd/d2vm/main.go

@@ -34,7 +34,7 @@ import (
 var (
 	output     = "disk0.qcow2"
 	size       = "1G"
-	password   = "root"
+	password   = ""
 	force      = false
 	verbose    = false
 	timeFormat = ""

cmd/d2vm/run/qemu.go

@@ -71,7 +71,7 @@ func init() {
 
 	// Paths and settings for disks
 	flags.Var(&disks, "disk", "Disk config, may be repeated. [file=]path[,size=1G][,format=qcow2]")
-	flags.StringVar(&data, "data", "", "String of metadata to pass to VM; error to specify both -data and -data-file")
+	flags.StringVar(&data, "data", "", "String of metadata to pass to VM")
 
 	// VM configuration
 	flags.StringVar(&accel, "accel", defaultAccel, "Choose acceleration mode. Use 'tcg' to disable it.")
@@ -91,7 +91,7 @@ func init() {
 	// USB devices
 	flags.BoolVar(&usbEnabled, "usb", false, "Enable USB controller")
 
-	flags.Var(&deviceFlags, "device", "Add USB host device(s). Format driver[,prop=value][,...] -- add device, like -device on the qemu command line.")
+	flags.Var(&deviceFlags, "device", "Add USB host device(s). Format driver[,prop=value][,...] -- add device, like --device on the qemu command line.")
 
 }
 

cmd/d2vm/run/vbox.go

@@ -93,7 +93,7 @@ func vbox(ctx context.Context, path string) error {
 	}
 
 	// remove machine in case it already exists
-	cleanup(vboxmanage, name)
+	cleanup(vboxmanage, name, false)
 
 	_, out, err := manage(vboxmanage, "createvm", "--name", name, "--register")
 	if err != nil {
@@ -273,22 +273,26 @@ func vbox(ctx context.Context, path string) error {
 	return <-errs
 }
 
-func cleanup(vboxmanage string, name string) {
+func cleanup(vboxmanage string, name string, logErrs ...bool) {
-	if _, _, err := manage(vboxmanage, "controlvm", name, "poweroff"); err != nil {
+	logErr := true
+	if len(logErrs) > 0 {
+		logErr = logErrs[0]
+	}
+	if _, _, err := manage(vboxmanage, "controlvm", name, "poweroff"); err != nil && logErr {
 		log.Errorf("controlvm poweroff error: %v", err)
 	}
 	_, out, err := manage(vboxmanage, "storageattach", name, "--storagectl", "IDE Controller", "--port", "1", "--device", "0", "--type", "hdd", "--medium", "emptydrive")
-	if err != nil {
+	if err != nil && logErr {
 		log.Errorf("storageattach error: %v\n%s", err, out)
 	}
 	for i := range disks {
 		id := strconv.Itoa(i)
 		_, out, err := manage(vboxmanage, "storageattach", name, "--storagectl", "SATA", "--port", "0", "--device", id, "--type", "hdd", "--medium", "emptydrive")
-		if err != nil {
+		if err != nil && logErr {
 			log.Errorf("storageattach error: %v\n%s", err, out)
 		}
 	}
-	if _, out, err = manage(vboxmanage, "unregistervm", name, "--delete"); err != nil {
+	if _, out, err = manage(vboxmanage, "unregistervm", name, "--delete"); err != nil && logErr {
 		log.Errorf("unregistervm error: %v\n%s", err, out)
 	}
 }

dockerfile.go

@@ -72,9 +72,6 @@ func (d Dockerfile) Render(w io.Writer) error {
 }
 
 func NewDockerfile(release OSRelease, img, password string, networkManager NetworkManager) (Dockerfile, error) {
-	if password == "" {
-		password = "root"
-	}
 	d := Dockerfile{Release: release, Image: img, Password: password, NetworkManager: networkManager}
 	var net NetworkManager
 	switch release.ID {