Check and create downloads dir before using

internal/pkg/agent/application/upgrade/artifact/download/fs/downloader.go

@@ -102,6 +102,12 @@ func (e *Downloader) downloadFile(filename, fullPath string) (string, error) {
 	}
 	defer sourceFile.Close()
 
+	if destinationDir := filepath.Dir(fullPath); destinationDir != "" && destinationDir != "." {
+		if err := os.MkdirAll(destinationDir, 0755); err != nil {
+			return "", err
+		}
+	}
+
 	destinationFile, err := os.OpenFile(fullPath, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, packagePermissions)
 	if err != nil {
 		return "", errors.New(err, "creating package file failed", errors.TypeFilesystem, errors.M(errors.MetaKeyPath, fullPath))

internal/pkg/agent/application/upgrade/artifact/download/http/downloader.go

@@ -12,6 +12,7 @@ import (
 	"net/url"
 	"os"
 	"path"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"time"
@@ -156,6 +157,12 @@ func (e *Downloader) downloadFile(ctx context.Context, artifactName, filename, f
 		return "", errors.New(err, "fetching package failed", errors.TypeNetwork, errors.M(errors.MetaKeyURI, sourceURI))
 	}
 
+	if destinationDir := filepath.Dir(fullPath); destinationDir != "" && destinationDir != "." {
+		if err := os.MkdirAll(destinationDir, 0755); err != nil {
+			return "", err
+		}
+	}
+
 	destinationFile, err := os.OpenFile(fullPath, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, packagePermissions)
 	if err != nil {
 		return "", errors.New(err, "creating package file failed", errors.TypeFilesystem, errors.M(errors.MetaKeyPath, fullPath))

internal/pkg/agent/cmd/container.go

@@ -860,6 +860,10 @@ func tryContainerLoadPaths() error {
 func syncDir(src string, dest string) error {
 	return filepath.Walk(src, func(path string, info os.FileInfo, err error) error {
 		if err != nil {
+			if os.IsNotExist(err) {
+				// source dir exists only if there's agent artifact
+				return nil
+			}
 			return err
 		}
 		relativePath := strings.TrimPrefix(path, src)