Server v4 (#370)

* refactoring-1

introduced pipelines and abstracted download process.go in Downloader interface

* migrated to boltdb from sqlite + session files

* refactoring: config struct & pipelines

* added js runtime for yt-dlp

* updated dockerfile

* added external js runtime, metadata scraping refactor

* updated Dockerfile

* fixed env propagation in docker

* updated package name to v4

* updated readme and cd

server/formats/parser.go

@@ -6,11 +6,11 @@ import (
 	"os/exec"
 	"sync"
 
-	"github.com/marcopiovanello/yt-dlp-web-ui/v3/server/config"
+	"github.com/marcopiovanello/yt-dlp-web-ui/v4/server/config"
 )
 
 func ParseURL(url string) (*Metadata, error) {
-	cmd := exec.Command(config.Instance().DownloaderPath, url, "-J")
+	cmd := exec.Command(config.Instance().Paths.DownloaderPath, url, "-J")
 
 	stdout, err := cmd.Output()
 	if err != nil {