fixed cannot find dialog if call_id is long

Change docker image to audiocodes

Feat/ws pong (drachtio#373)

* update to sofia branch with ws_pong support

* respond to ws ping

* update to sofia fix for sending ws pong as text frame

* build with merged sofia feature for ws options pong

terminate dialog on no reply after session-expires

Fixes drachtio#375

CI: Fix MYVERSION value

tags includes the image name.