Fix frontend dockerfile such that does not always upgrade to latest package

[CTrando]

After forking repos, I added the command to always upgrade node_modules to the newest versions such that it would get the repos I forked.

However, this has problems, as there are now numerous issues with dependencies updating and not have backwards compatibility.

Therefore, we should remove the command to upgrade in the dockerfile and make sure to respect the yarn.lock file, which helps 'lock' in what versions of dependencies we are using.

[CTrando]

I've gone ahead and made a commit on scratch/issue75 which should fix the compiler errors that come from updating.