v2.0.0

Breaking changes

• The default paths used within the Docker image have changed:
  • Centauri's config is now loaded from /centauri.conf
    (previously: /home/nonroot/centauri.conf)
  • ACME user data is stored in /data/user.pem
    (previously: /home/nonroot/user.pem)
  • Certificates are stored in /data/certs.json
    (previously: /home/nonroot/certs.json)
  • Tailscale state is now stored in /data/tailscale/
    (previously: /home/nonroot/.config/tsnet___centauri/)
• Centauri will no longer accept configurations that:
  • define a route with no upstreams, or
  • define a route with no domains.

Features

• Added TAILSCALE_DIR setting to specify where Tailscale stores its
  state. If not set, uses the previous behaviour of a folder underneath
  the user config directory.
• Centauri now uses structured logging. This allows you to filter logs by
  level (using the LOG_LEVEL setting), change the output format to JSON
  (using the LOG_FORMAT setting). The default log level is INFO; a
  lot of the more spammy day-to-day log lines are now DEBUG and hidden by
  default.

Other changes

• The FRONTEND setting is now case-insensitive.
• Added ACME_DISABLE_PROPAGATION_CHECK setting, which stops the ACME
  client from querying DNS servers to make sure the challenge records
  have propagated. This shouldn't be needed in normal use, but is handy
  for testing.
• Added DEBUG_CPU_PROFILE setting, which will write out a CPU profile
  to the given file. Shouldn't be used in production deployments!