Feat: healthcheck uses ping instead of DNS

internal/healthcheck/health_ping_test.go

@@ -0,0 +1,20 @@
+//go:build integration
+
+package healthcheck
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_healthCheck_ping(t *testing.T) {
+	t.Parallel()
+
+	pinger := newPinger()
+
+	err := healthCheck(context.Background(), pinger)
+
+	assert.NoError(t, err)
+}