metropolis/cli/pkg/context: replace with signal.NotifyContext

Change-Id: I457ccb83c7e25988755bb9463a8c83fc328a722b
Reviewed-on: https://review.monogon.dev/c/monogon/+/3081
Tested-by: Jenkins CI
Reviewed-by: Serge Bazanski <serge@monogon.tech>
diff --git a/cloud/shepherd/mini/BUILD.bazel b/cloud/shepherd/mini/BUILD.bazel
index 5fad3c2..f8a5e72 100644
--- a/cloud/shepherd/mini/BUILD.bazel
+++ b/cloud/shepherd/mini/BUILD.bazel
@@ -17,7 +17,6 @@
         "//cloud/shepherd",
         "//cloud/shepherd/manager",
         "//go/net/ssh",
-        "//metropolis/cli/pkg/context",
         "@io_k8s_klog_v2//:klog",
         "@org_golang_x_crypto//ssh",
     ],
diff --git a/cloud/shepherd/mini/main.go b/cloud/shepherd/mini/main.go
index b35c09e..0d7b11f 100644
--- a/cloud/shepherd/mini/main.go
+++ b/cloud/shepherd/mini/main.go
@@ -10,6 +10,7 @@
 	"net/http"
 	"net/url"
 	"os"
+	"os/signal"
 	"strings"
 
 	"k8s.io/klog/v2"
@@ -20,7 +21,6 @@
 	"source.monogon.dev/cloud/lib/component"
 	"source.monogon.dev/cloud/shepherd"
 	"source.monogon.dev/cloud/shepherd/manager"
-	clicontext "source.monogon.dev/metropolis/cli/pkg/context"
 )
 
 type Config struct {
@@ -133,7 +133,7 @@
 	registry := c.Component.PrometheusRegistry()
 	c.BMDB.EnableMetrics(registry)
 
-	ctx := clicontext.WithInterrupt(context.Background())
+	ctx, _ := signal.NotifyContext(context.Background(), os.Interrupt)
 	c.Component.StartPrometheus(ctx)
 
 	conn, err := c.BMDB.Open(true)