Change dummy authenticator to use standard login path

[jgwerner]

• Replaces the login URL to use /login instead of /dummy/login.
• Updates Makefile to include commands to build Kubernetes/Docker versions of the JupyterHub

[codecov[bot]]

Codecov Report

Merging #599 (68c7055) into main (8b3378d) will not change coverage. The diff coverage is 66.66%.

@@           Coverage Diff           @@
##             main     #599   +/-   ##
=======================================
  Coverage   66.50%   66.50%           
=======================================
  Files          12       12           
  Lines         806      806           
=======================================
  Hits          536      536           
  Misses        270      270           

Impacted Files	Coverage Δ
...umidesk/illumidesk/authenticators/authenticator.py	74.26% <66.66%> (ø)

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