feat: [CI-17953]: Add warning if base image connector is not provided (#152)

* [CI-17953]: Add warning if base image connector is not provided

* [CI-17953]: Add warning if base image connector is not provided

* [CI-17953]: Add warning if base image connector is not provided

cmd/kaniko-acr/main.go

@@ -711,15 +711,20 @@ func setDockerAuth(username, password, registry, dockerUsername, dockerPassword,
 		Password: password,
 	}
 
+	credentials := []docker.RegistryCredentials{pushToRegistryCreds}
+
+	if dockerRegistry != "" {
 		pullFromRegistryCreds := docker.RegistryCredentials{
 			Registry: dockerRegistry,
 			Username: dockerUsername,
 			Password: dockerPassword,
 		}
-
+		credentials = append(credentials, pullFromRegistryCreds)
-	credentials := []docker.RegistryCredentials{pushToRegistryCreds, pullFromRegistryCreds}
+	} else {
+		fmt.Println("\033[33mTo ensure consistent and reliable pipeline execution, we recommend setting up a Base Image Connector.\033[0m\n" +
+			"\033[33mWhile optional at this time, configuring it helps prevent failures caused by Docker Hub's rate limits.\033[0m")
+	}
 	return dockerConfig.CreateDockerConfig(credentials, dockerConfigPath)
-
 }
 
 func encodeParam(s string) string {

cmd/kaniko-docker/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"fmt"
 	"os"
 	"strings"
 
@@ -508,6 +509,9 @@ func setDockerAuth(username, password, registry, baseImageUsername, baseImagePas
 			Password: baseImagePassword,
 		}
 		credentials = append(credentials, pullFromRegistryCreds)
+	} else {
+		fmt.Println("\033[33mTo ensure consistent and reliable pipeline execution, we recommend setting up a Base Image Connector.\033[0m\n" +
+			"\033[33mWhile optional at this time, configuring it helps prevent failures caused by Docker Hub's rate limits.\033[0m")
 	}
 	// Creates docker config for both the regustries used for authentication
 	return dockerConfig.CreateDockerConfig(credentials, dockerPath)

cmd/kaniko-ecr/main.go

@@ -585,6 +585,9 @@ func setDockerAuth(dockerRegistry, dockerUsername, dockerPassword, accessKey, se
 			Password: dockerPassword,
 		}
 		credentials = append(credentials, pullFromRegistryCreds)
+	} else {
+		fmt.Println("\033[33mTo ensure consistent and reliable pipeline execution, we recommend setting up a Base Image Connector.\033[0m\n" +
+			"\033[33mWhile optional at this time, configuring it helps prevent failures caused by Docker Hub's rate limits.\033[0m")
 	}
 
 	if assumeRole != "" && oidcToken != "" {

cmd/kaniko-gar/main.go

@@ -384,6 +384,9 @@ func run(c *cli.Context) error {
 			); err != nil {
 				return errors.Wrap(err, "failed to create docker config")
 			}
+		} else {
+			fmt.Println("\033[33mTo ensure consistent and reliable pipeline execution, we recommend setting up a Base Image Connector.\033[0m\n" +
+				"\033[33mWhile optional at this time, configuring it helps prevent failures caused by Docker Hub's rate limits.\033[0m")
 		}
 	}
 

cmd/kaniko-gcr/main.go

@@ -353,7 +353,7 @@ func run(c *cli.Context) error {
 		}
 
 		// setup docker config only when base image registry is specified
-		if c.String("base-image-registry") != ""{
+		if c.String("base-image-registry") != "" {
 			if err := setDockerAuth(
 				c.String("base-image-username"),
 				c.String("base-image-password"),
@@ -361,6 +361,9 @@ func run(c *cli.Context) error {
 			); err != nil {
 				return errors.Wrap(err, "failed to create docker config")
 			}
+		} else {
+			fmt.Println("\033[33mTo ensure consistent and reliable pipeline execution, we recommend setting up a Base Image Connector.\033[0m\n" +
+				"\033[33mWhile optional at this time, configuring it helps prevent failures caused by Docker Hub's rate limits.\033[0m")
 		}
 	}
 
@@ -439,7 +442,7 @@ func run(c *cli.Context) error {
 	return plugin.Exec()
 }
 
-func setDockerAuth(dockerUsername, dockerPassword, dockerRegistry string) (error) {
+func setDockerAuth(dockerUsername, dockerPassword, dockerRegistry string) error {
 	dockerConfig := docker.NewConfig()
 	dockerRegistryCreds := docker.RegistryCredentials{
 		Registry: dockerRegistry,