start-tor.sh

#!/usr/bin/env bash

if [ "${TOR_OR_PORT_IPV4}" == 1 ]; then
    TOR_OR_PORT_IPV4="IPv4Only"
else
    TOR_OR_PORT_IPV4=""
fi

TOR_VERSION=$(dpkg -s tor | grep '^Version:')

echo "Using TOR_VERSION=${TOR_VERSION}, OR_PORT=${OR_PORT}, TOR_OR_PORT_IPV4=${TOR_OR_PORT_IPV4}, TOR_BRIDGERELAY=${TOR_BRIDGERELAY}, TOR_EXITRELAY=${TOR_EXITRELAY}, PT_PORT=${PT_PORT}, and EMAIL=${EMAIL}."

cat > /etc/tor/torrc << EOF
RunAsDaemon 0
# We don't need an open SOCKS port.
SocksPort 0
BridgeRelay ${TOR_BRIDGERELAY}
ExitRelay ${TOR_EXITRELAY}
# A static nickname makes it easy to identify bridges that were set up using
# this Docker image.
Nickname DockerObfs4Bridge
Log notice file /var/log/tor/log
Log notice stdout
ServerTransportPlugin obfs4 exec /usr/bin/obfs4proxy
ExtORPort auto
DataDirectory /var/lib/tor

# The variable "OR_PORT" is replaced with the OR port.
ORPort ${OR_PORT} ${TOR_OR_PORT_IPV4}

# The variable "PT_PORT" is replaced with the obfs4 port.
ServerTransportListenAddr obfs4 0.0.0.0:${PT_PORT}

# The variable "EMAIL" is replaced with the operator's email address.
ContactInfo ${EMAIL}
EOF

echo "Starting tor."
tor -f /etc/tor/torrc