docker/mod/coturn/entrypoint.sh

#!/bin/sh
set -e 
apk add jq su-exec
if [ "$ENABLE_HTTPS_PROXY" == true ]; then

  while [ ! -f /etc/resty-auto-ssl/storage/file/*latest ]
  do
    echo "ERROR: certificate doesn't exist yet."
    echo "Certificate gets create on the first request to the HTTPS proxy."
    echo "We will try again..."
    sleep 10
  done

  # extract cert
  cat /etc/resty-auto-ssl/storage/file/*%3Alatest | jq -r '.fullchain_pem' > /tmp/cert.pem
  cat /etc/resty-auto-ssl/storage/file/*%3Alatest | jq -r '.privkey_pem' > /tmp/key.pem
fi

if [ ! -f /tmp/cert.pem ] || [ ! -f /tmp/key.pem ]; then
  echo "ERROR: certificate not found, but coturn relies on it."
  echo "Use either auto HTTPS proxy or"
  echo "provide path to certificates in .env file"
  exit 1
fi

# If command starts with an option, prepend with turnserver binary.
if [ "${1:0:1}" == '-' ]; then
  set -- turnserver "$@"
fi

su-exec nobody $(eval "echo $@")