Error install extension

Hi, i try to install in a docker container v1.19 the tabnine extension,

and on the logs (docker logs mycontainer) i got the next error (after click Install button ± 1 mins):

root INFO [tabnine.tabnine-vscode]: trying to resolve latest version...
root ERROR Failed to resolve plugins from 'vscode:extension/tabnine.tabnine-vscode' Error: getaddrinfo EAI_AGAIN open-vsx.org
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:66:26)
root INFO Deploy plugin entry took: 56061.5 ms
root INFO [6211ea3e-ac8a-4023-845b-9f1b32b3888c] Waiting for backend deployment took: 260.2 ms [Finished 145.799 s after frontend start]

any idea how to fix it?