diff --git a/apps/go.mod b/apps/go.mod
index 81e1058..8228180 100644
--- a/apps/go.mod
+++ b/apps/go.mod
@@ -5,8 +5,9 @@ go 1.19
 require (
 	github.com/gorilla/handlers v1.5.1
 	github.com/gorilla/mux v1.8.0
-	github.com/hashicorp/nomad/api v0.0.0-20220909162634-8ff79d8a2da0
+	github.com/hashicorp/nomad/api v0.0.0-20220930123803-fb1f5ea2d981
 	github.com/spf13/cobra v1.5.0
+	golang.org/x/exp v0.0.0-20220929160808-de9c53c655b9
 	golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4
 	gopkg.in/yaml.v3 v3.0.1
 )
diff --git a/apps/go.sum b/apps/go.sum
index 0798c05..b335d0f 100644
--- a/apps/go.sum
+++ b/apps/go.sum
@@ -1,6 +1,6 @@
 github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/docker/go-units v0.4.0 h1:3uh0PgVws3nIA0Q+MwDC8yjEPf9zjRfZZWXZYDct3Tw=
+github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
 github.com/felixge/httpsnoop v1.0.1/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
 github.com/felixge/httpsnoop v1.0.3 h1:s/nj+GCswXYzN5v2DpNMuMQYe+0DDwt5WVCU6CWBdXk=
 github.com/felixge/httpsnoop v1.0.3/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
@@ -17,8 +17,8 @@ github.com/hashicorp/go-cleanhttp v0.5.2 h1:035FKYIWjmULyFRBKPs8TBQoi0x6d9G4xc9n
 github.com/hashicorp/go-cleanhttp v0.5.2/go.mod h1:kO/YDlP8L1346E6Sodw+PrpBSV4/SoxCXGY6BqNFT48=
 github.com/hashicorp/go-rootcerts v1.0.2 h1:jzhAVGtqPKbwpyCPELlgNWhE1znq+qwJtW5Oi2viEzc=
 github.com/hashicorp/go-rootcerts v1.0.2/go.mod h1:pqUvnprVnM5bf7AOirdbb01K4ccR319Vf4pU3K5EGc8=
-github.com/hashicorp/nomad/api v0.0.0-20220909162634-8ff79d8a2da0 h1:gsbyjDOGAUIM9UJc0JknQ9XCr3m2AasG+eXoufoNgdA=
-github.com/hashicorp/nomad/api v0.0.0-20220909162634-8ff79d8a2da0/go.mod h1:Z0U0rpbh4Qlkgqu3iRDcfJBA+r3FgoeD1BfigmZhfzM=
+github.com/hashicorp/nomad/api v0.0.0-20220930123803-fb1f5ea2d981 h1:Kxz3mE0kP/ffUjRCvDCVNa8pjKEnZPKE4tDm5qnPWOY=
+github.com/hashicorp/nomad/api v0.0.0-20220930123803-fb1f5ea2d981/go.mod h1:1dS8jZqAXhEreBcb26wpaV4Llk2cLO2sucuDKI+oTIs=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/inconshreveable/mousetrap v1.0.1 h1:U3uMjPSQEBMNp1lFxmllqCPM6P5u/Xq7Pgzkat/bFNc=
 github.com/inconshreveable/mousetrap v1.0.1/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
@@ -32,12 +32,14 @@ github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RR
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/rogpeppe/go-internal v1.6.1 h1:/FiVV8dS/e+YqF2JvO3yXRFbBLTIuSDkuC7aBOAvL+k=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
-github.com/shoenig/test v0.3.1 h1:dhGZztS6nQuvJ0o0RtUiQHaEO4hhArh/WmWwik3Ols0=
+github.com/shoenig/test v0.4.0 h1:3X4xG/Chx7mzi0h71Sm6Vo38q0EYaQIBZpYFRcA1HVM=
 github.com/spf13/cobra v1.5.0 h1:X+jTBEBqF0bHN+9cSMgmfuvv2VHJ9ezmFNf9Y/XstYU=
 github.com/spf13/cobra v1.5.0/go.mod h1:dWXEIy2H428czQCjInthrTRUg7yKbok+2Qi/yBIJoUM=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
+golang.org/x/exp v0.0.0-20220929160808-de9c53c655b9 h1:lNtcVz/3bOstm7Vebox+5m3nLh/BYWnhmc3AhXOW6oI=
+golang.org/x/exp v0.0.0-20220929160808-de9c53c655b9/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4 h1:uVc8UZUe6tr40fFVnUP5Oj+veunVezqYl9z7DYw9xzw=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
diff --git a/apps/homadctl/cmd/containers.go b/apps/homadctl/cmd/containers.go
new file mode 100644
index 0000000..394e315
--- /dev/null
+++ b/apps/homadctl/cmd/containers.go
@@ -0,0 +1,63 @@
+package cmd
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+
+	"github.com/davidsbond/homad/apps/homadctl/internal/nomad"
+	"github.com/spf13/cobra"
+)
+
+// Containers is the root command for tasks that manage container images within the homelab.
+func Containers() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:     "containers",
+		Aliases: []string{"container"},
+		Args:    cobra.NoArgs,
+		Short:   "Subcommands for managing containers running in the homelab",
+	}
+
+	cmd.AddCommand(
+		containersList(),
+	)
+
+	return cmd
+}
+
+func containersList() *cobra.Command {
+	var jsonOut bool
+
+	cmd := &cobra.Command{
+		Use:     "list",
+		Aliases: []string{"ls"},
+		Args:    cobra.NoArgs,
+		Short:   "List all containers running in the homelab",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			client, err := nomad.NewClient()
+			if err != nil {
+				return err
+			}
+
+			images, err := nomad.Images(cmd.Context(), client)
+			if err != nil {
+				return err
+			}
+
+			if jsonOut {
+				return json.NewEncoder(os.Stdout).Encode(images)
+			}
+
+			for _, image := range images {
+				fmt.Println(image)
+			}
+
+			return nil
+		},
+	}
+
+	flags := cmd.PersistentFlags()
+	flags.BoolVar(&jsonOut, "json", false, "Output containers in JSON format")
+
+	return cmd
+}
diff --git a/apps/homadctl/cmd/gc.go b/apps/homadctl/cmd/gc.go
index f412668..49c4127 100644
--- a/apps/homadctl/cmd/gc.go
+++ b/apps/homadctl/cmd/gc.go
@@ -1,57 +1,22 @@
 package cmd
 
 import (
-	"strings"
-
 	"github.com/davidsbond/homad/apps/homadctl/internal/nomad"
-	"github.com/hashicorp/nomad/api"
 	"github.com/spf13/cobra"
 )
 
-// GC returns a cobra command that triggers all periodic jobs in the maintenance namespace that have a suffix of
-// "gc". This is how garbage-collection tasks are typically named.
+// GC returns a cobra command that triggers all periodic garbage collection jobs.
 func GC() *cobra.Command {
 	return &cobra.Command{
 		Use:   "gc",
 		Short: "Trigger all garbage collection jobs available",
 		RunE: func(cmd *cobra.Command, args []string) error {
-			const namespace = "maintenance"
-
 			client, err := nomad.NewClient()
 			if err != nil {
 				return err
 			}
 
-			client.SetNamespace(namespace)
-			jobs, _, err := client.Jobs().List(&api.QueryOptions{})
-			switch {
-			case err != nil:
-				return err
-			case len(jobs) == 0:
-				return nil
-			}
-
-			jobIDs := make([]string, 0)
-			for _, job := range jobs {
-				if !strings.HasSuffix(job.Name, "gc") {
-					continue
-				}
-
-				jobIDs = append(jobIDs, job.ID)
-			}
-
-			if len(jobIDs) == 0 {
-				return nil
-			}
-
-			for _, jobID := range jobIDs {
-				_, _, err = client.Jobs().PeriodicForce(jobID, &api.WriteOptions{})
-				if err != nil {
-					return err
-				}
-			}
-
-			return nil
+			return nomad.GarbageCollect(cmd.Context(), client)
 		},
 	}
 }
diff --git a/apps/homadctl/internal/nomad/client.go b/apps/homadctl/internal/nomad/client.go
index 12fc124..276b4f0 100644
--- a/apps/homadctl/internal/nomad/client.go
+++ b/apps/homadctl/internal/nomad/client.go
@@ -1,11 +1,103 @@
 // Package nomad provides functions for interacting with a nomad cluster.
 package nomad
 
-import "github.com/hashicorp/nomad/api"
+import (
+	"context"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/hashicorp/nomad/api"
+	"golang.org/x/exp/maps"
+)
 
 // NewClient returns a new nomad client configured to perform calls to the homelab.
 func NewClient() (*api.Client, error) {
 	return api.NewClient(&api.Config{
-		Address: "https://homelab.dsb.dev",
+		Address:   "https://homelab.dsb.dev",
+		Namespace: api.AllNamespacesNamespace,
+		HttpClient: &http.Client{
+			Timeout: time.Minute,
+		},
 	})
 }
+
+// GarbageCollect triggers all periodic jobs within the nomad cluster that are suffixed with "gc". This is the typical
+// pattern for custom garbage collection jobs.
+func GarbageCollect(ctx context.Context, client *api.Client) error {
+	jobs, _, err := client.Jobs().List(&api.QueryOptions{Namespace: api.AllNamespacesNamespace})
+	switch {
+	case err != nil:
+		return err
+	case len(jobs) == 0:
+		return nil
+	}
+
+	for _, job := range jobs {
+		if ctx.Err() != nil {
+			return ctx.Err()
+		}
+
+		if !strings.HasSuffix(job.Name, "gc") {
+			continue
+		}
+
+		_, _, err = client.Jobs().PeriodicForce(job.ID, &api.WriteOptions{Namespace: job.Namespace})
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// Images returns a slice of all container image tags used by tasks within the nomad cluster.
+func Images(ctx context.Context, client *api.Client) ([]string, error) {
+	images := make(map[string]struct{})
+
+	jobs, _, err := client.Jobs().List(&api.QueryOptions{Namespace: api.AllNamespacesNamespace})
+	if err != nil {
+		return nil, err
+	}
+
+	for _, job := range jobs {
+		if ctx.Err() != nil {
+			return nil, ctx.Err()
+		}
+
+		info, _, err := client.Jobs().Info(job.ID, &api.QueryOptions{Namespace: job.Namespace})
+		if err != nil {
+			return nil, err
+		}
+
+		for _, taskGroup := range info.TaskGroups {
+			if ctx.Err() != nil {
+				return nil, ctx.Err()
+			}
+
+			for _, task := range taskGroup.Tasks {
+				if ctx.Err() != nil {
+					return nil, ctx.Err()
+				}
+
+				if task.Driver != "docker" {
+					continue
+				}
+
+				imageInterface, ok := task.Config["image"]
+				if !ok {
+					continue
+				}
+
+				image, ok := imageInterface.(string)
+				if !ok {
+					continue
+				}
+
+				images[image] = struct{}{}
+			}
+		}
+	}
+
+	return maps.Keys(images), nil
+}
diff --git a/apps/homadctl/main.go b/apps/homadctl/main.go
index 5884801..e155db0 100644
--- a/apps/homadctl/main.go
+++ b/apps/homadctl/main.go
@@ -27,6 +27,7 @@ func main() {
 
 	root.AddCommand(
 		cmd.GC(),
+		cmd.Containers(),
 	)
 
 	if err := root.ExecuteContext(ctx); err != nil {