docker-entrypoint.sh

#!/usr/bin/env bash
set -Eeo pipefail

# usage: file_env VAR [DEFAULT]
#    ie: file_env 'XYZ_DB_PASSWORD' 'example'
# (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
#  "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
file_env() {
	local var="$1"
	local fileVar="${var}_FILE"
	local def="${2:-}"
	if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
		echo >&2 "error: both $var and $fileVar are set (but are exclusive)"
		exit 1
	fi
	local val="$def"
	if [ "${!var:-}" ]; then
		val="${!var}"
	elif [ "${!fileVar:-}" ]; then
		val="$(< "${!fileVar}")"
	fi
	export "$var"="$val"
	unset "$fileVar"
}

export KONG_NGINX_DAEMON=off

if [[ "$1" == "kong" ]]; then
  PREFIX=${KONG_PREFIX:=/usr/local/kong}
  file_env KONG_PG_PASSWORD

  if [[ "$2" == "docker-start" ]]; then

    # Initialize the database before running
    kong migrations bootstrap -c /etc/kong/kong.conf
    # Update the database before running
    kong migrations up -c /etc/kong/kong.conf

    kong prepare -p "$PREFIX" "$@"

    ln -sf /dev/stdout $PREFIX/logs/access.log
    ln -sf /dev/stdout $PREFIX/logs/admin_access.log
    ln -sf /dev/stderr $PREFIX/logs/error.log

    exec /usr/local/openresty/nginx/sbin/nginx \
      -p "$PREFIX" \
      -c nginx.conf
  fi
fi

exec "$@"