tor pluggable transports

• ubuntu_rolling_*_tor_*_obfs4proxy_*_webtunnel_*_snowflake_* (The ubuntu:rolling tag points to the latest release (regardless of LTS status).)
• ubuntu_lts_*_tor_*_obfs4proxy_* (The ubuntu:latest tag points to the "latest LTS", since that's the version recommended for general use.)

• /var/log/tor (contains notices.log file)
• /usr/local/etc/tor or /etc/tor (contains torrc file)
• /var/lib/tor (tor working directory, contains cached-certs, cached-descriptors, cached-descriptors.new, cached-microdesc-consensus, cached-microdescs, cached-microdescs.new, keys, lock, pt_state, state)

• https://hub.docker.com/_/ubuntu
• https://git.torproject.org
• https://gitlab.com/yawning/obfs4
• https://github.com/osminogin/docker-tor-simple