fix: Certificate for Windows

[apawlik]

Windows gives warning when trying to run the Docker binary which may prevent some users from actually launching the app.

[nokome]

Thanks @apawlik. I assume you mean the dockter binary (aargh, naming #37 :). I think the same issue (unsigned binaries) is present for MacOS as well (@beneboy ?).

We have Stencila certificates for both Win and Mac but are not using them. The tricky bit might be signing them as part of our automated releases (currently cross platform builds i.e. MacOS and WIn are built on Linux).

After a bit of research some options (in descending order):

• osslsigncode

  • https://blog.synapp.nz/2017/06/16/code-signing-a-windows-application-on-linux-on-windows/
  • https://stackoverflow.com/a/29073957/4625911

• build and sign on Appveyor e.g https://natemcmaster.com/blog/2018/07/02/code-signing/

[beneboy]

I did not run into any code signing issues running the binary on my machine, but again being a developer I may have disabled some of the code signing checks so I can use various open source applications.

I will see if I can set up a macOS VM with a more standard setup for this kind of testing.