refactor: moved all fatal errors to logrus

This will allow us to test commands that would normally exit

client/client.go

@@ -2,7 +2,6 @@ package client
 
 import (
 	"errors"
-	"fmt"
 	"net/http"
 	"os"
 
@@ -12,6 +11,7 @@ import (
 	dCliContextStore "github.com/docker/cli/cli/context/store"
 	dClient "github.com/docker/docker/client"
 	"github.com/moby/term"
+	"github.com/sirupsen/logrus"
 )
 
 func NewClientWithContext(contextURL string) *dClient.Client {
@@ -44,8 +44,7 @@ func NewClientWithContext(contextURL string) *dClient.Client {
 	cl, err := dClient.NewClientWithOpts(clientOpts...)
 
 	if err != nil {
-		fmt.Println("Unable to create docker client")
-		panic(err)
+		logrus.Fatalf("unable to create Docker client: %s", err)
 	}
 	return cl
 }