* using SSH_AUTH_SOCK (ssh agent forwarding) to pull upm private repos
* sshAgent as input parameter
* yarn run prettier --write "src/**/*.{js,ts}"
* yarn run lint --fix && yarn build
* fixed compilation after rebase
* removed RUN apt-get update && apt-get install -y openssh-client. This change needs to be done upstream. See game-ci/docker#117
To automatically upload symbols to unity, we need to define the `USYM_UPLOAD_AUTH_TOKEN` variable. Currently the build container ignores this variable, even if it's defined in the github action.
```
2021-03-26T02:35:35.5938747Z time="2021-03-26T02:35:35Z" level=fatal msg="Please provide an auth token with USYM_UPLOAD_AUTH_TOKEN environment variable"
```
