entrypoint.sh

#!/usr/bin/env bash

set -e

[ "$DEBUG" == 'true' ] && set -x

DAEMON=supervisord

# SSH Configuration
# Copy defined
if [ "$SSH_AUTHORIZED_KEYS" ]; then
    if [ -f "$SSH_AUTHORIZED_KEYS" ]; then
        cp "$SSH_AUTHORIZED_KEYS" /root/.ssh/authorized_keys
        chown -R root:root /root/.ssh/authorized_keys
        chmod 600 /root/.ssh/authorized_keys
    fi
fi;

# Copy default config from cache
#@TODO: Is it necessary?
if [ ! "$(ls -A /etc/ssh)" ]; then
   cp -a /etc/ssh.cache/* /etc/ssh/
fi

# Generate Host keys, if required
#@TODO: Is it necessary?
if [ ! -f /etc/ssh/ssh_host_* ]; then
    ssh-keygen -A
fi

# Fix permissions, if writable
#@TODO: Is it necessary?
#if [ -w ~/.ssh ]; then
#    chown -R root:root ~/.ssh && chmod 700 ~/.ssh/ && chmod 600 ~/.ssh/* || echo "WARNING: No SSH authorized_keys or config found for root"
#fi

# Enabling password login for root user
#if [ "$SSH_ROOT_PASS" ]; then
#    echo "root:$SSH_ROOT_PASS" | chpasswd
#    sed -i 's/PermitRootLogin without-password/PermitRootLogin yes/' /etc/ssh/sshd_config
#fi;

# sSMTP: Write environment variables into config file
if [ "$SMTP_HOST" ]; then
    echo "mailhub=$SMTP_HOST" >> /etc/ssmtp/ssmtp.conf
fi;
if [ "$SMTP_AUTH_USER" ]; then
    echo "AuthUser=$SMTP_AUTH_USER" >> /etc/ssmtp/ssmtp.conf
fi;
if [ "$SMTP_AUTH_PASS" ]; then
    echo "AuthPass=$SMTP_AUTH_PASS" >> /etc/ssmtp/ssmtp.conf
fi;

if [ "$SMTP_STARTTLS" ]; then
    echo "UseSTARTTLS=YES" >> /etc/ssmtp/ssmtp.conf
fi;

stop() {
    echo "Received SIGINT or SIGTERM. Shutting down $DAEMON"
    # Get PID
    pid=$(cat /var/run/$DAEMON/$DAEMON.pid)
    # Set TERM
    kill -SIGTERM "${pid}"
    # Wait for exit
    wait "${pid}"
    # All done.
    echo "Done."
}

echo "Running $@"
if [ "$(basename $1)" == "$DAEMON" ]; then
    trap stop SIGINT SIGTERM
    $@ &
    pid="$!"
    mkdir -p /var/run/$DAEMON && echo "${pid}" > /var/run/$DAEMON/$DAEMON.pid
    wait "${pid}" && exit $?
else
    exec "$@"
fi