made dockerfile work with 2022

Merge pull request #66 from c-base/non_native_ws

Remove travis_wait

Try going back to Node 8 with new dockerignore

Update dockerignore

See if older NPM is faster

Switch to the websocket module

Go back to WARN

Longer timeout

Add travis_wait to the build step

Split Docker build and composing

Allow NPM to write logs for RPi3 builds

Add travis_wait again

Push to Docker Hub only from master

Remove travis_wait