fix: more intuitive port handling

abyss.go

@@ -43,11 +43,12 @@ func main() {
 		app.filesDir = "./files"
 	}
 
-	if app.port == ":" {
+	if app.port == "" {
 		slog.Info("running on default port")
 		app.port = ":3235"
 	} else {
 		slog.Info("running on modified port")
+		app.port = ":" + app.port
 	}
 
 	mux := http.NewServeMux()

generate_config.sh

@@ -30,7 +30,7 @@ ABYSS_URL=$ABYSS_URL
 ABYSS_FILEDIR=$ABYSS_FILEDIR
 
 # The port the server will run on, it's fine to leave it empty. Defaults to :3235
-ABYSS_PORT=:$ABYSS_PORT
+ABYSS_PORT=$ABYSS_PORT
 
 # This is the username of the user for accessing /tree
 AUTH_USERNAME=$AUTH_USERNAME