feat: save container images

.github/workflows/e2e.yml

@@ -101,7 +101,8 @@ jobs:
 
         ssh root@$IP "cloud-init status --wait"
 
-        ssh root@$IP "dnf install -y podman qemu-kvm-core"
+        ssh root@$IP "dnf install -y podman qemu-kvm-core epel-release"
+        ssh root@$IP "dnf install -y s3cmd"
 
         ssh root@$IP "ln -s /usr/libexec/qemu-kvm /usr/bin/qemu-system-x86_64"
 
@@ -133,6 +134,8 @@ jobs:
         echo 'TimeoutStopSec=1' >> test.service
         echo 'ExecStart=/usr/local/bin/out-of-tree kernel autogen --threads=4 --max=256 --shuffle' >> test.service
         echo 'ExecStart=/usr/local/bin/out-of-tree pew --qemu-timeout=10m --threads=4 --include-internal-errors' >> test.service
+        echo 'ExecStart=/usr/local/bin/out-of-tree container save' >> test.service
+        echo "ExecStart=/usr/bin/s3cmd put --acl-public *.tar.gz s3://out-of-tree/1.0.0/containers/ --host=fra1.digitaloceanspaces.com --host-bucket='%(bucket)s.fra1.digitaloceanspaces.com' --access_key=${{ secrets.DIGITALOCEAN_SPACES_ACCESS_KEY }} --secret_key=${{ secrets.DIGITALOCEAN_SPACES_SECRET_KEY }}" >> test.service
 
         scp test.service root@$IP:/etc/systemd/system/test.service
 

cmd/container.go

@@ -7,6 +7,7 @@ package cmd
 import (
 	"fmt"
 	"os/exec"
+	"path/filepath"
 	"strings"
 
 	"github.com/rs/zerolog/log"
@@ -18,6 +19,7 @@ type ContainerCmd struct {
 	Filter string `help:"filter by name"`
 
 	List    ContainerListCmd    `cmd:"" help:"list containers"`
+	Save    ContainerSaveCmd    `cmd:"" help:"save containers"`
 	Cleanup ContainerCleanupCmd `cmd:"" help:"cleanup containers"`
 }
 
@@ -45,6 +47,37 @@ func (cmd ContainerListCmd) Run(containerCmd *ContainerCmd) (err error) {
 	return
 }
 
+type ContainerSaveCmd struct {
+	OutDir string `help:"directory to save containers" default:"./" type:"existingdir"`
+}
+
+func (cmd ContainerSaveCmd) Run(containerCmd *ContainerCmd) (err error) {
+	for _, name := range containerCmd.Containers() {
+		nlog := log.With().Str("name", name).Logger()
+
+		output := filepath.Join(cmd.OutDir, name+".tar")
+		nlog.Info().Msgf("saving to %v")
+
+		err = container.Save(name, output)
+		if err != nil {
+			return
+		}
+
+		compressed := output + ".gz"
+		nlog.Info().Msgf("compressing to %v", compressed)
+
+		var raw []byte
+		raw, err = exec.Command("gzip", output).CombinedOutput()
+		if err != nil {
+			nlog.Error().Err(err).Msg(string(raw))
+			return
+		}
+
+		nlog.Info().Msg("done")
+	}
+	return
+}
+
 type ContainerCleanupCmd struct{}
 
 func (cmd ContainerCleanupCmd) Run(containerCmd *ContainerCmd) (err error) {

container/container.go

@@ -95,6 +95,26 @@ func Import(path, name string) (err error) {
 	return
 }
 
+func Save(name, path string) (err error) {
+	exist := Container{name: name}.Exist()
+	if !exist {
+		err = errors.New("container does not exist")
+		log.Error().Err(err).Msg("")
+		return
+	}
+
+	cmd := exec.Command(Runtime, "save", name, path)
+	log.Debug().Msgf("%v", cmd)
+
+	raw, err := cmd.CombinedOutput()
+	if err != nil {
+		log.Error().Err(err).Msg(string(raw))
+		return
+	}
+
+	return
+}
+
 type Volume struct {
 	Src, Dest string
 }