Add commend to interactively remove docker images.

cmd/hoster_cli/commands/dockerRemoveImages.go

@@ -0,0 +1,61 @@
+package commands
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/Iilun/survey/v2"
+	"github.com/dustin/go-humanize"
+	docker "github.com/fsouza/go-dockerclient"
+	"github.com/urfave/cli/v2"
+)
+
+func CmdDockerRemoveImages(c *cli.Context) error {
+	client, err := docker.NewClientFromEnv()
+	if err != nil {
+		return err
+	}
+
+	imgs, err := client.ListImages(docker.ListImagesOptions{All: false})
+	if err != nil {
+		return err
+	}
+
+	imageNames := []string{}
+
+	for _, img := range imgs {
+		imageNames = append(imageNames, fmt.Sprintf("%s | %s | %s | %s", strings.Join(img.RepoTags, ", "), humanize.Bytes(uint64(img.Size)), time.Unix(img.Created, 0).Format("2006-01-02 15:04:05"), img.ID))
+	}
+
+	prompt := &survey.MultiSelect{
+		Message:  "What days do you prefer:",
+		Options:  imageNames,
+		PageSize: 20,
+		Filter: func(filter, value string, index int) bool {
+			filter = strings.TrimSpace(filter)
+			parts := strings.Split(value, " | ")
+			return strings.Contains(strings.ToLower(parts[0]), strings.ToLower(filter))
+		},
+	}
+
+	selection := []string{}
+	survey.AskOne(prompt, &selection, survey.WithKeepFilter(true))
+
+	if len(selection) == 0 {
+		return nil
+	}
+
+	for _, image := range selection {
+		parts := strings.Split(image, " | ")
+		id := parts[len(parts)-1]
+		err = client.RemoveImage(id)
+		if err != nil {
+			fmt.Printf("Error removing image \"%s\": %v\n", parts[0], err)
+		} else {
+			fmt.Printf("Image \"%s\" was removed\n", parts[0])
+		}
+	}
+
+	return nil
+}

cmd/hoster_cli/hoster.go

@@ -13,8 +13,6 @@ import (
 )
 
 func Execute() {
-	conf.LoadConfig(filepath.Join(findHomeDir(), ".hoster.yml"))
-
 	app := &cli.App{
 		Name:    "hoster",
 		Usage:   "Hoster",
@@ -42,8 +40,22 @@ func Execute() {
 						Required: true,
 					},
 				},
+				Before: func(c *cli.Context) error {
+					conf.LoadConfig(filepath.Join(findHomeDir(), ".hoster.yml"))
+					return nil
+				},
 				Action: commands.CmdNew,
 			},
+			{
+				Name: "docker",
+				Subcommands: []*cli.Command{
+					{
+						Name:   "rmi",
+						Usage:  "Select images to remove",
+						Action: commands.CmdDockerRemoveImages,
+					},
+				},
+			},
 			{
 				Name:   "check",
 				Usage:  "Check if newer versions of docker images are available",