fix: set connection timeouts + clean up bad contexts

Closes coop-cloud/organising#205.

pkg/client/client.go

@@ -4,6 +4,7 @@ package client
 import (
 	"net/http"
 	"os"
+	"time"
 
 	"github.com/docker/docker/client"
 	"github.com/sirupsen/logrus"
@@ -46,9 +47,11 @@ func New(contextName string) (*client.Client, error) {
 		clientOpts = append(clientOpts, client.WithAPIVersionNegotiation())
 	}
 
+	clientOpts = append(clientOpts, client.WithTimeout(3*time.Second))
+
 	cl, err := client.NewClientWithOpts(clientOpts...)
 	if err != nil {
-		logrus.Fatalf("unable to create Docker client: %s", err)
+		return nil, err
 	}
 
 	logrus.Debugf("created client for '%s'", contextName)