Unable to follow docker build procedures in tags, new or not

[mlb5000]

Similar to #365, this issue has resurfaced with the make docker-deps docker-intermediate docker-services command, due to this commit in cryptobox: https://github.com/wireapp/cryptobox/commit/aadeb1c3e56b5e10d3c34bf8c8a9c525567ca860

In the # compile cryptobox-c phases of Dockerfile.deps and Dockerfile.prebuilder it should set the checkout to a specific tag to avoid this sort of thing. I was able to fix my local copy by adding git checkout tags/v1.0.0. There may also be an issue in the build process for cryptobox itself, but the versioning issue inside wire-server feels like a separate thing