diff --git a/.dockerignore b/.dockerignore
index da46e3e..471022c 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -6,3 +6,4 @@ qemu.sh
 bin
 dist
 images
+examples/build
diff --git a/.gitignore b/.gitignore
index 2e71f2e..16cde8b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,4 @@ dist/
 images
 wstation
 /d2vm
+/examples/build
diff --git a/Dockerfile b/Dockerfile
index 4119a84..421032e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -29,6 +29,7 @@ FROM ubuntu:20.04
 
 RUN apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get -y install --no-install-recommends \
+        ca-certificates \
         util-linux \
         udev \
         parted \
diff --git a/Makefile b/Makefile
index 694c584..a4451aa 100644
--- a/Makefile
+++ b/Makefile
@@ -91,3 +91,13 @@ build: $(BIN) bin
 .PHONY: release
 release: $(BIN) bin
 	@VERSION=$(VERSION) IMAGE=$(DOCKER_IMAGE) goreleaser release --rm-dist --parallelism 8
+
+.PHONY: examples
+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; \
+	  done
+	@echo "Building examples/full/Dockerfile"
+	@./d2vm build -o examples/build/full.qcow2 --build-arg=USER=adphi --build-arg=PASSWORD=adphi examples/full
diff --git a/cmd/d2vm/build.go b/cmd/d2vm/build.go
index 0e93e4c..68d3c4f 100644
--- a/cmd/d2vm/build.go
+++ b/cmd/d2vm/build.go
@@ -26,7 +26,6 @@ import (
 
 	"go.linka.cloud/d2vm"
 	"go.linka.cloud/d2vm/pkg/docker"
-	"go.linka.cloud/d2vm/pkg/exec"
 )
 
 var (
@@ -47,7 +46,6 @@ var (
 			if err != nil {
 				return err
 			}
-			exec.SetDebug(debug)
 			if file == "" {
 				file = filepath.Join(args[0], "Dockerfile")
 			}
@@ -69,7 +67,6 @@ func init() {
 	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(&size, "size", "s", "10G", "The output image size")
-	buildCmd.Flags().BoolVarP(&debug, "debug", "d", false, "Enable Debug output")
 	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")
 	buildCmd.Flags().StringVar(&networkManager, "network-manager", "", "Network manager to use for the image: none, netplan, ifupdown")
diff --git a/cmd/d2vm/convert.go b/cmd/d2vm/convert.go
index bfc9a03..e845136 100644
--- a/cmd/d2vm/convert.go
+++ b/cmd/d2vm/convert.go
@@ -26,7 +26,6 @@ import (
 
 	"go.linka.cloud/d2vm"
 	"go.linka.cloud/d2vm/pkg/docker"
-	"go.linka.cloud/d2vm/pkg/exec"
 )
 
 var (
@@ -56,7 +55,6 @@ var (
 					return fmt.Errorf("%s already exists", output)
 				}
 			}
-			exec.SetDebug(debug)
 			if _, err := os.Stat(output); err == nil || !os.IsNotExist(err) {
 				if !force {
 					return fmt.Errorf("%s already exists", output)
@@ -97,7 +95,6 @@ func init() {
 	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(&size, "size", "s", "10G", "The output image size")
-	convertCmd.Flags().BoolVarP(&debug, "debug", "d", false, "Enable Debug output")
 	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")
 	convertCmd.Flags().StringVar(&networkManager, "network-manager", "", "Network manager to use for the image: none, netplan, ifupdown")
diff --git a/cmd/d2vm/main.go b/cmd/d2vm/main.go
index c54fb90..e4aa414 100644
--- a/cmd/d2vm/main.go
+++ b/cmd/d2vm/main.go
@@ -20,9 +20,11 @@ import (
 	"os"
 	"os/signal"
 
+	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 
 	"go.linka.cloud/d2vm"
+	"go.linka.cloud/d2vm/pkg/exec"
 )
 
 var (
@@ -30,13 +32,19 @@ var (
 	size     = "1G"
 	password = "root"
 	force    = false
-	debug    = false
+	verbose  = false
 	format   = "qcow2"
 
 	rootCmd = &cobra.Command{
 		Use:          "d2vm",
 		SilenceUsage: true,
 		Version:      d2vm.Version,
+		PersistentPreRun: func(cmd *cobra.Command, args []string) {
+			if verbose {
+				logrus.SetLevel(logrus.TraceLevel)
+			}
+			exec.SetDebug(verbose)
+		},
 	}
 )
 
@@ -53,3 +61,9 @@ func main() {
 	}()
 	rootCmd.ExecuteContext(ctx)
 }
+
+func init() {
+	rootCmd.PersistentFlags().BoolVarP(&verbose, "debug", "d", false, "Enable Debug output")
+	rootCmd.PersistentFlags().MarkDeprecated("debug", "use -v instead")
+	rootCmd.PersistentFlags().BoolVarP(&verbose, "verbose", "v", false, "Enable Verbose output")
+}
diff --git a/cmd/d2vm/run.go b/cmd/d2vm/run.go
index 10c62bf..e4875a1 100644
--- a/cmd/d2vm/run.go
+++ b/cmd/d2vm/run.go
@@ -15,7 +15,6 @@
 package main
 
 import (
-	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 
 	"go.linka.cloud/d2vm/cmd/d2vm/run"
@@ -25,11 +24,6 @@ var (
 	runCmd = &cobra.Command{
 		Use:   "run",
 		Short: "run the converted virtual machine",
-		PersistentPreRun: func(cmd *cobra.Command, args []string) {
-			if debug {
-				logrus.SetLevel(logrus.DebugLevel)
-			}
-		},
 	}
 )
 
@@ -39,5 +33,4 @@ func init() {
 	runCmd.AddCommand(run.VboxCmd)
 	runCmd.AddCommand(run.QemuCmd)
 	runCmd.AddCommand(run.HetznerCmd)
-	runCmd.PersistentFlags().BoolVarP(&debug, "debug", "d", false, "Enable Debug output")
 }
diff --git a/cmd/d2vm/run/hetzner.go b/cmd/d2vm/run/hetzner.go
index 1250c2b..81757e1 100644
--- a/cmd/d2vm/run/hetzner.go
+++ b/cmd/d2vm/run/hetzner.go
@@ -33,9 +33,10 @@ import (
 )
 
 const (
-	serverImg     = "ubuntu-20.04"
-	vmBlockPath   = "/dev/sda"
-	sparsecatPath = "/usr/local/bin/sparsecat"
+	hetznerTokenEnv = "HETZNER_TOKEN"
+	serverImg       = "ubuntu-20.04"
+	vmBlockPath     = "/dev/sda"
+	sparsecatPath   = "/usr/local/bin/sparsecat"
 )
 
 var (
@@ -56,7 +57,7 @@ var (
 )
 
 func init() {
-	HetznerCmd.Flags().StringVarP(&hetznerToken, "token", "t", "", "Hetzner Cloud API token")
+	HetznerCmd.Flags().StringVarP(&hetznerToken, "token", "t", "", "Hetzner Cloud API token [$"+hetznerTokenEnv+"]")
 	HetznerCmd.Flags().StringVarP(&hetznerSSHUser, "user", "u", "root", "d2vm image ssh user")
 	HetznerCmd.Flags().StringVarP(&hetznerSSHKeyPath, "ssh-key", "i", "", "d2vm image identity key")
 	HetznerCmd.Flags().BoolVar(&hetznerRemove, "rm", false, "remove server when done")
@@ -85,7 +86,7 @@ func runHetzner(ctx context.Context, imgPath string, stdin io.Reader, stderr io.
 	}
 	defer src.Close()
 
-	c := hcloud.NewClient(hcloud.WithToken(hetznerToken))
+	c := hcloud.NewClient(hcloud.WithToken(GetStringValue(hetznerTokenEnv, hetznerToken, "")))
 	st, _, err := c.ServerType.GetByName(ctx, hetznerVMType)
 	if err != nil {
 		return err
@@ -205,8 +206,10 @@ func runHetzner(ctx context.Context, imgPath string, stdin io.Reader, stderr io.
 						logrus.Infof("%s / %d%% transfered ( %s/s)", humanize.Bytes(uint64(b)), int(float64(b)/float64(i.VirtualSize)*100), humanize.Bytes(uint64(b-last)))
 						last = b
 					case <-ctx.Done():
+						logrus.Warnf("context cancelled")
 						return
 					case <-done:
+						logrus.Infof("transfer finished")
 						return
 					}
 				}
diff --git a/examples/alpine.Dockerfile b/examples/alpine.Dockerfile
index 75c994e..3a72437 100644
--- a/examples/alpine.Dockerfile
+++ b/examples/alpine.Dockerfile
@@ -1,4 +1,5 @@
 FROM alpine
 
-RUN apk add --no-cache openssh-server && \
+RUN apk add --no-cache openrc openssh-server && \
+    rc-update add sshd default && \
     echo "PermitRootLogin yes" >> /etc/ssh/sshd_config
diff --git a/examples/debian.Dockerfile b/examples/debian.Dockerfile
index 4c1f475..74997b2 100644
--- a/examples/debian.Dockerfile
+++ b/examples/debian.Dockerfile
@@ -1,4 +1,5 @@
 FROM debian
 
-RUN apt update && apt install -y openssh-server && \
+RUN apt update && apt install -y openssh-server systemctl && \
+    systemctl enable ssh && \
     echo "PermitRootLogin yes" >> /etc/ssh/sshd_config
diff --git a/examples/full/00-netconf.yaml b/examples/full/00-netconf.yaml
deleted file mode 100644
index 8edbc4c..0000000
--- a/examples/full/00-netconf.yaml
+++ /dev/null
@@ -1,10 +0,0 @@
-network:
-    version: 2
-    renderer: networkd
-    ethernets:
-        eth0:
-            dhcp4: true
-            nameservers:
-                addresses:
-                - 8.8.8.8
-                - 8.8.4.4
diff --git a/examples/full/Dockerfile b/examples/full/Dockerfile
index 76a3698..50a8843 100644
--- a/examples/full/Dockerfile
+++ b/examples/full/Dockerfile
@@ -3,14 +3,11 @@ FROM ubuntu
 # Install some system packages
 RUN apt update && DEBIAN_FRONTEND=noninteractive apt install -y --no-install-recommends \
       qemu-guest-agent \
-      netplan.io \
       ca-certificates \
       dnsutils \
       sudo \
       openssh-server
 
-# Setup default network config
-COPY 00-netconf.yaml /etc/netplan/
 # Add a utility script to resize serial terminal
 COPY resize /usr/local/bin/
 
diff --git a/examples/ubuntu.Dockerfile b/examples/ubuntu.Dockerfile
index be9568c..d7ce6c8 100644
--- a/examples/ubuntu.Dockerfile
+++ b/examples/ubuntu.Dockerfile
@@ -1,4 +1,5 @@
 FROM ubuntu
 
-RUN apt update && apt install -y openssh-server && \
+RUN apt update && apt install -y openssh-server systemctl && \
+    systemctl enable ssh && \
     echo "PermitRootLogin yes" >> /etc/ssh/sshd_config
diff --git a/templates/debian.Dockerfile b/templates/debian.Dockerfile
index abcdc0a..ac8366e 100644
--- a/templates/debian.Dockerfile
+++ b/templates/debian.Dockerfile
@@ -11,7 +11,7 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
       systemd \
       dbus \
       iproute2 \
-      udhcpc \
+      isc-dhcp-client \
       iputils-ping
 
 RUN systemctl preset-all
diff --git a/templates/ubuntu.Dockerfile b/templates/ubuntu.Dockerfile
index bdb61d8..ea6d37f 100644
--- a/templates/ubuntu.Dockerfile
+++ b/templates/ubuntu.Dockerfile
@@ -9,7 +9,7 @@ RUN apt-get update -y && \
   systemd-sysv \
   systemd \
   dbus \
-  udhcpc \
+  isc-dhcp-client \
   iproute2 \
   iputils-ping