feat(clustertool): Add support for autoconfiguring DockerHub credentials

clustertool/embed/generic/base/clusterenv.yaml

@@ -12,6 +12,10 @@ DASHBOARD_IP: 192.168.20.211
 # Used to automatically generate a sshkey-pair for FluxCD
 # Has to start with ssh://
 GITHUB_REPOSITORY: ""
-# DO NOT ALTER
+## Uncomment and adapt to automatically setup your dockerhub credentials
+## This should prevent much of the potential ratelimits
+# DOCKERHUB_USER: dockerhub-username
+# DOCKERHUB_PASSWORD: dockerhub-password
+## DO NOT ALTER
 PODNET: 172.16.0.0/16
 SVCNET: 172.17.0.0/16

clustertool/pkg/initfiles/initfiles.go

@@ -274,6 +274,50 @@ func GenPatches() error {
 		log.Fatal().Err(err).Msg("Error: %s")
 	}
 
+	// Assuming this is part of your function
+	if helper.TalEnv["DOCKERHUB_USER"] != "" && helper.TalEnv["DOCKERHUB_PASSWORD"] != "" {
+		// Prepare the content to append
+		configContent := fmt.Sprintf(`# Add Dockerhub Login
+- operation: replace
+  path: /machine/registries/config/registry-1.docker.io
+  value:
+    auth:
+      username: %s
+      password: %s
+- operation: replace
+  path: /machine/registries/config/docker.io
+  value:
+    auth:
+      username: %s
+      password: %s
+`, helper.TalEnv["DOCKERHUB_USER"], helper.TalEnv["DOCKERHUB_PASSWORD"], helper.TalEnv["DOCKERHUB_USER"], helper.TalEnv["DOCKERHUB_PASSWORD"])
+
+		// Open the file in append mode or create it if it doesn't exist
+		file, err := os.OpenFile(filepath.Join(helper.ClusterPath+"/talos/patches", "all.yaml"), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error opening file: %s")
+		}
+		defer file.Close()
+
+		// Write the content to the file
+		if _, err := file.Write([]byte(configContent)); err != nil {
+			log.Fatal().Err(err).Msg("Error writing to file: %s")
+		}
+	} else {
+		// Optional: Append a note if the environment variables are not set
+		emptyContent := `# No DockerHub credentials provided
+`
+		file, err := os.OpenFile(filepath.Join(helper.ClusterPath+"/talos/patches", "all.yaml"), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+		if err != nil {
+			log.Fatal().Err(err).Msg("Error opening file: %s")
+		}
+		defer file.Close()
+
+		if _, err := file.Write([]byte(emptyContent)); err != nil {
+			log.Fatal().Err(err).Msg("Error writing to file: %s")
+		}
+	}
+
 	// Read the content of the talenv.yaml file
 	talenvContent, err := os.ReadFile(helper.ClusterPath + "/clusterenv.yaml")
 	if err != nil {