docker-entrypoint-vc.sh

#!/bin/bash
set -Eeuo pipefail

if [ "$(id -u)" = '0' ]; then
  chown -R lhvalidator:lhvalidator /var/lib/lighthouse
  exec gosu lhvalidator docker-entrypoint.sh "$@"
fi

if [[ "${NETWORK}" =~ ^https?:// ]]; then
  echo "Custom testnet at ${NETWORK}"
  repo=$(awk -F'/tree/' '{print $1}' <<< "${NETWORK}")
  branch=$(awk -F'/tree/' '{print $2}' <<< "${NETWORK}" | cut -d'/' -f1)
  config_dir=$(awk -F'/tree/' '{print $2}' <<< "${NETWORK}" | cut -d'/' -f2-)
  echo "This appears to be the ${repo} repo, branch ${branch} and config directory ${config_dir}."
  # For want of something more amazing, let's just fail if git fails to pull this
  set -e
  if [ ! -d "/var/lib/lighthouse/validators/testnet/${config_dir}" ]; then
    mkdir -p /var/lib/lighthouse/validators/testnet
    cd /var/lib/lighthouse/validators/testnet
    git init --initial-branch="${branch}"
    git remote add origin "${repo}"
    git config core.sparseCheckout true
    echo "${config_dir}" > .git/info/sparse-checkout
    git pull origin "${branch}"
  fi
  set +e
  __network="--testnet-dir=/var/lib/lighthouse/validators/testnet/${config_dir}"
else
  __network="--network=${NETWORK}"
fi

# Check whether we should use MEV Boost
if [ "${MEV_BOOST}" = "true" ]; then
  __mev_boost="--builder-proposals"
  echo "MEV Boost enabled"
else
  __mev_boost=""
fi

# Check whether we should send stats to beaconcha.in
if [ -n "${BEACON_STATS_API}" ]; then
  __beacon_stats="--monitoring-endpoint https://beaconcha.in/api/v1/client/metrics?apikey=${BEACON_STATS_API}&machine=${BEACON_STATS_MACHINE}"
else
  __beacon_stats=""
fi

# Check whether we should enable doppelganger protection
if [ "${DOPPELGANGER}" = "true" ]; then
  __doppel="--enable-doppelganger-protection"
  echo "Doppelganger protection enabled, VC will pause for 2 epochs"
else
  __doppel=""
fi

if [ "${DEFAULT_GRAFFITI}" = "true" ]; then
# Word splitting is desired for the command line parameters
# shellcheck disable=SC2086
  exec "$@" ${__network} ${__mev_boost} ${__beacon_stats} ${__doppel} ${VC_EXTRAS}
else
# Word splitting is desired for the command line parameters
# shellcheck disable=SC2086
  exec "$@" ${__network} "--graffiti" "${GRAFFITI}" ${__mev_boost} ${__beacon_stats} ${__doppel} ${VC_EXTRAS}
fi