Merge branch 'feature/caddyfile' into 'develop'

Add a Caddyfile.

See merge request !50
1 job for develop in 2 minutes and 54 seconds (queued for 7 seconds)
Name Stage Failure
failed
unit-testing Test There is an unknown failure, please try again
       test/formatter_test.exs:68: (test)

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Finished in 29.0 seconds
309 tests, 2 failures

Randomized with seed 331630
ERROR: Job failed: exit code 1